How to save multiple checkboxes

I have this td inside table tag with form method post:

<td><input  type="checkbox" class="isProper" name="is_proper[]" value="V"   /></td>
 <td><input  type="checkbox" class="notProper" name="is_proper[]" value="X" /></td>

User can checked only one checkbox per row, and I want to save checked value - "V" / "X".

In controller I have:

    public function update(Request $request)
    {
        $oper_id = $request->oper_id;
        $comment = $request->comment;
        $rescoring = $request->rescoring;
        $isproper = $request->is_proper;

        foreach($oper_id as $key => $value){
            $finalcontrol = Finalcontrol::find($value);
            $finalcontrol->comment = $comment[$key];
            $finalcontrol->rescoring = $rescoring[$key];
            $finalcontrol->isproper = $isproper[$key];
            $finalcontrol->save();
            
            return redirect()->back()->with('success','Saved');        
    }

The thing is that controller save only the first row records to DB The problem started when I added this two of checkbox tag, before that all the records of all rows was saved corectly . Someone can please tell me what I am doing wrong about the checkboxes?