If you want games with a regular deck of cards. My Caltech game group which has up to seven people playing on Steam ends up playing “Screw Your Neighbor” (also known as “Oh Hell”) almost every week. You just need a regular deck of cards. Spoons is another card game that works with more people.
Other games we enjoy regularly is Red7 Red7 | Board Game | BoardGameGeek I have yet to figure out how to think about the strategy!