Do play Legends of Runeterra. It's a charming, friendly and easy to pickup collectible card game set in the world of LoL with ZERO abusive practices. Enjoy PvP/Ranked ladder while you can, because the lack of dark patterns means it made less money than they expected, so some features were shelved and more things may be removed in the future.
Anyway, almost the only game I play in spare times since years, is The Dark Mod, it's free and works fine in Linux, Windows and even in Mac (using PlayonMac).
It is, without a doubt one of the best free games you can find, apart with a friendly community for the support and a complete Wiki with step by step tutorials for creating own missions. A game to enjoy for many years. Walkthroughs of all missions in YT in the case if you get stuck in a mission.
One of my best friends I met playing LoL so I don’t know if regret would be the word, but… Going to Linux exclusively was one of the easiest ways to break the habit.
