I want to my if condition to work on all records in laravel controller

I am new in laravel and i am making a quiz app where there are four possible answers of a question and one is correct .The questions and answers are stored in database, my code works only on one question.

this is my code in controller

   
    $answers =$request->all();
   
   
  $getAnswer=Question::where('ans',[$request->ans])->get();


         
        if ($getAnswer->isEmpty()) { 
            return back()->withErrors(['fail' => ['Wrong Answer']]);
        }
        else {
            return redirect()->back()->with('success', 'your Answer is Correct'); 
        }```




Can anybody please help me...