Upload images to mySQL database from HTML via Laravel

<div class="designs">
  <input class="design" type="file" name="subdesigns[image][]" accept="image/*" placeholder="Sube el diseño">
  <label class="select">
    <select name="subdesigns[spec_id][]">
      <option value="">Formato</option>
      @foreach($specs as $spec)
      <option value="{{$spec->id}}">{{$spec->name}}</option>
      @endforeach
    </select>
  </label>
</div>

//Substract array of the images
$subdesigns = $request->input('subdesigns.image');
//Substract array of the specs
$specs = $request->input('subdesigns.spec_id');

//Creations of subdesigns
$i = 0; //To move specs array
foreach ($subdesigns as $subs) {
    $sub = new Subdesign();
    $sub->image = $subs;
    $sub->spec_id = $specs[$i]; //Adding the corresponding spec_id to each subdesign
    $sub->design_id = $design->id;
    $sub->save();
    $i++; // Move to the next spec_id
}

public function setImageAttribute($value)
    {
        $user = Auth::user();
        $attribute_name = "image";
        $disk = "public_folder";
        $destination_path = "Disenos/" . $user->id;
        
        $this->uploadFileToDisk($value, $attribute_name, $disk, $destination_path);

        // return $this->{$attribute_name}; // uncomment if this is a translatable field
    }

    public function uploadFileToDisk($value, $attribute_name, $disk, $destination_path)
    {
        $request = \Request::instance();
        // if a new file is uploaded, delete the file from the disk
        if (
            $request->hasFile($attribute_name) &&
            $this->{$attribute_name} &&
            $this->{$attribute_name} != null
        ) { dd("1");
            \Storage::disk($disk)->delete($this->{$attribute_name});
            $this->attributes[$attribute_name] = null;
        }
        // if the file input is empty, delete the file from the disk
        if (is_null($value) && $this->{$attribute_name} != null) {dd("2");
            \Storage::disk($disk)->delete($this->{$attribute_name});
            $this->attributes[$attribute_name] = null;
        }
        // if a new file is uploaded, store it on disk and its filename in the database
        if ($request->hasFile($attribute_name) && $request->file($attribute_name)->isValid()) { dd("3");
            // 1. Generate a new file name
            $file = $request->file($attribute_name);
            $new_file_name = md5($file->getClientOriginalName() . time()) . '.' . $file->getClientOriginalExtension();
            // 2. Move the new file to the correct path
            $file_path = $file->storeAs($destination_path, $new_file_name, $disk);
            // 3. Save the complete path to the database
            $this->attributes[$attribute_name] = $file_path;
            // $this->import($file_path);
        }
    }

<?php

return [

    'default' => env('FILESYSTEM_DRIVER', 'local'),

    'cloud' => env('FILESYSTEM_CLOUD', 's3'),

    'disks' => [

        'local' => [
            'driver' => 'local',
            'root' => storage_path('app'),
        ],

        'public' => [
            'driver' => 'local',
            'root' => storage_path('app/public'),
            'url' => env('APP_URL').'/storage',
            'visibility' => 'public',
        ],

        's3' => [
            'driver' => 's3',
            'key' => env('AWS_ACCESS_KEY_ID'),
            'secret' => env('AWS_SECRET_ACCESS_KEY'),
            'region' => env('AWS_DEFAULT_REGION'),
            'bucket' => env('AWS_BUCKET'),
            'url' => env('AWS_URL'),
        ],
        
        'public_folder' => [
            'driver' => 'local',
            'root' => public_path('images'),
            'url' => '/images',
        ],

    ],

];