PackageNotFoundError: Package not found: 'conda' Package 'conda' is not installed in C:\Users\user\AppData\Local\Programs\Python\Python39 - anaconda

Question

my problem started when I tried to use conda create -n nam python3 and got conda.exceptions.CondaRuntimeError:
The following packages will be downloaded:
package | build
---------------------------|-----------------
vs2015_runtime-14.0.25420 | 0 2.0 MB
vc-14 | 0 703 B
python-3.6.2 | 0 31.5 MB
certifi-2016.2.28 | py36_0 214 KB
wheel-0.29.0 | py36_0 129 KB
wincertstore-0.2 | py36_0 14 KB
setuptools-36.4.0 | py36_1 534 KB
pip-9.0.1 | py36_1 1.7 MB
------------------------------------------------------------
Total: 36.0 MB
The following NEW packages will be INSTALLED:
certifi: 2016.2.28-py36_0
pip: 9.0.1-py36_1
python: 3.6.2-0
setuptools: 36.4.0-py36_1
vc: 14-0
vs2015_runtime: 14.0.25420-0
wheel: 0.29.0-py36_0
wincertstore: 0.2-py36_0
Proceed ([y]/n)?
Fetching packages ...
vs2015_runtime 100% |###############################| Time: 0:00:00 3.63 MB/s
vc-14-0.tar.bz 100% |###############################| Time: 0:00:00 140.66 kB/s
python-3.6.2-0 100% |###############################| Time: 0:00:05 5.56 MB/s
certifi-2016.2 100% |###############################| Time: 0:00:00 1.18 MB/s
wheel-0.29.0-p 100% |###############################| Time: 0:00:00 1.02 MB/s
wincertstore-0 100% |###############################| Time: 0:00:00 4.84 MB/s
setuptools-36. 100% |###############################| Time: 0:00:00 1.64 MB/s
pip-9.0.1-py36 100% |###############################| Time: 0:00:01 1.68 MB/s
Extracting packages ...
[ COMPLETE ]|##################################################| 100%
Linking packages ...
An unexpected error has occurred. | 0%
Please consider posting the following information to the
conda GitHub issue tracker at:
https://github.com/conda/conda/issues
Current conda install:
platform : win-64
conda version : 4.2.7
conda is private : False
conda-env version : 4.2.7
conda-build version : not installed
python version : 3.9.12.final.0
requests version : 2.28.1
root environment : C:\Users\user\AppData\Local\Programs\Python\Python39 (writable)
default environment : C:\Users\user\AppData\Local\Programs\Python\Python39
envs directories : C:\Users\user\AppData\Local\Programs\Python\Python39\envs
package cache : C:\Users\user\AppData\Local\Programs\Python\Python39\pkgs
channel URLs : https://repo.continuum.io/pkgs/free/win-64/
https://repo.continuum.io/pkgs/free/noarch/
https://repo.continuum.io/pkgs/pro/win-64/
https://repo.continuum.io/pkgs/pro/noarch/
https://repo.continuum.io/pkgs/msys2/win-64/
https://repo.continuum.io/pkgs/msys2/noarch/
config file : None
offline mode : False
$ C:\Users\user\miniconda3\Scripts\conda-script.py create -n nam python
Traceback (most recent call last):
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\install.py", line 201, in yield_lines
with open(path) as fh:
FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python39\\pkgs\\vs2015_runtime-14.0.25420-0\\info\\has_prefix'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\install.py", line 209, in yield_lines
raise StopIteration
StopIteration
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\cli\install.py", line 405, in install
execute_actions(actions, index, verbose=not context.quiet)
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\plan.py", line 643, in execute_actions
inst.execute_instructions(plan, index, verbose)
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\instructions.py", line 134, in execute_instructions
cmd(state, arg)
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\instructions.py", line 78, in LINK_CMD
link(state['prefix'], dist, lt, index=state['index'])
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\install.py", line 943, in link
has_prefix_files = read_has_prefix(join(info_dir, 'has_prefix'))
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\install.py", line 248, in read_has_prefix
return {pr.filepath: (pr.placeholder, pr.filemode) for pr in parsed_lines}
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\install.py", line 248, in <dictcomp>
return {pr.filepath: (pr.placeholder, pr.filemode) for pr in parsed_lines}
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\install.py", line 247, in <genexpr>
parsed_lines = (parse_line(line) for line in yield_lines(path))
RuntimeError: generator raised StopIteration
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\exceptions.py", line 472, in conda_exception_handler
return_value = func(*args, **kwargs)
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\cli\main.py", line 144, in _main
exit_code = args.func(args, p)
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\cli\main_create.py", line 68, in execute
install(args, parser, 'create')
File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\conda\cli\install.py", line 420, in install
raise CondaRuntimeError('RuntimeError: %s' % e)
conda.exceptions.CondaRuntimeError: Runtime error: RuntimeError: generator raised StopIteration
my version is conda 4.2 and
I discovered that it's no longer supported, so I used conda update conda and got
PackageNotFoundError: Package not found: 'conda' Package 'conda' is not installed in C:\Users\user\AppData\Local\Programs\Python\Python39
, tried to reinstall anaconda and still got the same error.

Answer 1

"C:\Users\user\AppData\Local\Programs\Python\Python39"
has nothing to do with Anaconda. This the path where standard Python from python.org is installed. Why didn't you mention the 2 Python installations?
Anyhow, before you can use Anaconda you have activate it, preferably using the Anaconda prompt. Only then can you update conda.
And do yourself a favour: Either learn some conda basics from https://conda.io/projects/conda/en/latest/user-guide/getting-started.html
or remove it from your system.