Poker Now is a free web site where you can play poker with friends. I don't think they do actual gambling. I have played on this a couple of times with friends.

You can have 10 people. Texas Hold'em or Pot Limit Omaha. The game creator confirms people who want to join and can change the small/big blinds. Strangely when you join you request a stack size so the creator has to tell people what the starting stack size is.

The interface is kind of basic but it works. The chat window is pretty bad though. Very small or covers the whole board. It's easier to chat on Discord (and btw I think there is no voice chat support so Discord for voice chat).

It's functional and it's free and good enough for casual games. I guess that's all you can ask for.