Laravel 6 upload file - laravel

Question

I have a big struggle about adding file uploading to an existing laravel 6 form.
I want to add the file url to database for future to be displayed (or downloaded).
When i try to do something nothing is happaning, nothing in DB nothing in file dir.
Here is my model:
protected $fillable = [
'age',
'last_rab',
'names',
'email',
'phone',
'last_pos',
'cv',
'msg',
'status'
];
Here is my Controller:
public function store(Request $request)
{
$request->validate([
'names' => 'required',
'age' => 'required',
'last_rab' => 'required',
'last_pos' => 'required',
'phone' => 'required',
'cv' => 'required|mimes:doc,docx,pdf,txt|max:2048',
'msg' => 'required'
]);
if ($request->captcha != 58) {
return redirect()->back()->withInput()->with('warning', 'Wrong');
}
$karieri = new Karieri;
$karieri->age = $request->age;
$karieri->last_rab = $request->last_rab;
$karieri->names = $request->names;
$karieri->email = $request->email;
$karieri->phone = $request->phone;
$karieri->last_pos = $request->last_pos;
if ($request->hasfile('cv')) {
$file = $request->file('cv');
$name = time().'.'.$file->extension();
$file->move(public_path() . '/storage/app/public', $name);
$data = $name;
$karieri->cv = json_encode($data);
}
$karieri->msg = $request->msg;
$karieri->status = 0;
$karieri->save();
return redirect()->back()->with('success', 'Thanks');
}
Can somebody say how to do this?