Help with an eloquent query that is using a join

I made this eloquent query:

        $games = DB::table('games')
            ->join('players', 'games.id', '=', 'players.game_id')
            ->join('users', 'players.user_id', '=', 'users.id')
            ->select(
                'games.id as game_id', 
                'users.id as user_id',
                'games.winner as winner', 
                'players.id as player_id', 
                'games.created_at',
            )
            ->where('user_id', $this->user->id)
            ->get();

And it gives me the exact results I expect:

[{"game_id":7,"user_id":3,"winner":7,"player_id":8,"created_at":"2022-04-24 00:17:09"},{"game_id":8,"user_id":3,"winner":10,"player_id":10,"created_at":"2022-04-24 01:27:17"}]

As you can see, "winner" != "player_id" in the first record, but they are equal in the second record (meaning the player lost the first game, but won the second). However, if I attempt to add "->where('winner', 'player_id')" to the query, it returns nothing. The query all together looks like this:

        $wins = DB::table('games')
            ->join('players', 'games.id', '=', 'players.game_id')
            ->join('users', 'players.user_id', '=', 'users.id')
            ->select(
                'games.id as game_id', 
                'users.id as user_id',
                'games.winner as winner', 
                'players.id as player_id', 
                'games.created_at',
            )
            ->where('user_id', $this->user->id)
            ->where('winner', 'player_id')
            ->get();

Instead of "->where('winner', 'player_id')" I have also tried "->where('games.winner', 'players.id')." Any ideas what I'm doing wrong here? Thanks!