I discovered another 4-player trick taking game through it, Doppelkopf - https://www.pagat.com/schafkopf/doko.html .

It uses a double pack of cards, so every card is in there twice. You play with your partner against the other two players, but at the start of each deal you don't know who your partner is (the two players with a queen of clubs are together). There are more trumps than non-trumps. And there is a long list of fun optional house rules to choose from.