So, basically any sort of game (any genre, from Dark Souls over Forza to RPGs) where there is a multiplayer component (either PvE, PvP or competitive leaderboards), where customization (of loadouts/car/character/army/whatever) is important, there is room for lots of self-improvement (gitting gud) and while there is progression, there is no grind (as in a Wargaming tittle/Warthunder/average MMORPG etc.)
Some examples of the games that I've enjoyed, that fit the criteria (multiplayer component, skill-based progression, strong emphasis on customization):
Forza Horizon 4 (waiting for 6)
Elden Ring
Armored Core VI
Battlefields
Gwent
Grim Dawn (least grindy of all the ARPGs, not playing another ARPG any time soon)
Borderlands 3 (franchise died with 4 IMO)
V Rising