Errors when deleting images in Laravel when no record found

I want to delete some user, and if that user have an avatar i want to remove the avatar either. so i do like this :

public function destroy($id)
    {
        $user = User::findOrFail($id);
        if ($user && $user->profile->avatar){
            Storage::delete($user->profile->avatar);
        }

        User::destroy($id);
        return back();
    }

but when i do this it give me an error like this when user doesn't have any record in avatar tables:

"Trying to get property of non-object"

so what make me get this errors and how can i fix it. thanks.

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