Where you can play a 6 or 8 deck shoe or request a shuffle, etc.
Its no fun playing one hand at a time when the deck gets reshuffled.
One that works for usa residents
Don't know if this information is the right one but just stumble over it online:
https://wizardofodds.com/games/blackjack/strategy/4-decks/ which is suitable for the US resident. At a time i played on the game but not a pro in gambling anyway.