Use Heroic launcher for Epic games, it works great for everything I’ve put through it (including anti-cheat riddled stuff like GTA5 and Fall Guys). Heroic also supports GOG games. Lutris does the rest but can be a bit hit and miss compared to Steam/Heroic.
I found out not long ago that I can’t donate blood in the US because I’m British and lived here during the 1990’s so could theoretically be carrying mad cow disease.