Submit form from a tab content - laravel

Question

I'm new at Laravel. How can I submit form from a tab content and return to the same tab content view? Example, I choose November form then when I submit it return to November. I'm really confusing right now.
This is my controller :
public function project_charter()
{
$nik = Sentinel::getUser()->nik;
$data = AccelerateMentee::select(
'accelerate_mentee.*',
'accelerate_rotation.start_date',
'accelerate_rotation.id as id_rotation',
'accelerate_rotation.status as status_rotation'
)
->leftJoin('accelerate_rotation', 'accelerate_rotation.id', '=', 'accelerate_mentee.rotation')
->where([
['accelerate_mentee.nik', '=', $nik],
])
->first();
if(!empty($data)){
$first_month = date('m', strtotime($data->start_date));
} else {
$first_month = null;
}
$project_activity = AccelerateProjectActivity::where([
['id_rotation', '=', $data->id_rotation],
['month', '=', $first_month]
])->get();
This is my view :
<div class="tab-content mt-3 ">
<ul class="nav nav-pills nav-white" id="pills-tab" role="tablist">
#for($i = 0; $i < 6; $i++)
#php $month = date('m', mktime(0, 0, 0, ($first_month + $i), 1)); #endphp
<li class="nav-item">
<a class="nav-link {{$i == 0 ? 'active' : ''}} get-project-activity" data-month="{{ $month }}" href="{{'#table_'. $month }}" data-toggle="tab">
{{ date('F', mktime(0, 0, 0, ($first_month + $i), 1)) }}
</a>
</li>
#endfor
</ul>
<div class="tab-content" id="pills-tabContent">
#for($i = 0; $i < 6; $i++)
#php $month = date('m', mktime(0, 0, 0, ($first_month + $i), 1)); #endphp
#if($i == 0)
<div class="tab-pane show mt-5 {{$i == 0 ? 'active' : ''}}" id="{{'table_' . $month }}" role="tabpanel">
<div class="card my-2">
<div class="card-body">
<div class="d-flex justify-content-between pb-5">
<h3>Project Activity {{ date('F', mktime(0, 0, 0, ($first_month + $i), 1)) }}</h3>
#if($data->status_rotation == 'draft')
<button class="btn btn-primary btn-sm create-activity" data-month="{{ $month }}">
<i class="fa fa-plus"></i>
Add Project Activity
</button>
#endif
</div>
<div class="mb-5">
#include('pages.accelerate.mentee.element.table_project_activity')
</div>
</div>
</div>
</div>
#else
<div class="tab-pane mt-5" id="{{'table_' . $month}}" role="tabpanel" aria-labelledby="data">
<div class="card my-2">
<div class="card-body">
<div class="d-flex justify-content-between pb-5">
<h3>Project Activity {{ date('F', mktime(0, 0, 0, ($first_month + $i), 1)) }}</h3>
#if($data->status_rotation == 'draft')
<button class="btn btn-primary btn-sm create-activity" data-month="{{ $month }}">
<i class="fa fa-plus"></i>
Add Project Activity
</button>
#endif
</div>
<div class="mb-5" id="{{'detail_' . $month}}">
</div>
</div>
</div>
</div>
#endif
#endfor
</div>
</div>
Hope u guys can help me, I try many ways but didn't work. I'm really really confusing. Thanks!