Upload Multiple File In Different Attribute

How to upload multiple selected files in different attribute such as pic_1,pic_2,pic_3 in MYSQL

Views

 <input type="file" name="carEvidence" multiple>

Controller

  $this->validate($request, [
            'carEvidence' =>  'required|mimes:jpeg,png,jpg,zip,pdf|max:2048',
        ]);
 $post = new Cars;
 if ($files = $request->file('carEvidence')) {
            $destinationPath = 'public/image/'; // upload path
            $profileImage = date('YmdHis') . "." . $files->getClientOriginalExtension();
            $files->move($destinationPath, $profileImage);
            $post['carEvidence'] = "$profileImage";
        }
$post->save();
        return redirect('/internalaudit')->with('success', "Has been sent for Validation");

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