I only recently found out that Heroic Games launcher has a build for arm64 that they build every time but they don’t publish. It works pretty well with a few bugs, so just wanted to let people know that it works and how to download it:
Actions tab → Build on main/stable push (from the left sidebar) → Pick one (preferably one tagged with [Release]) → Scroll down to artifacts and download the arm App Image
Cheers
(I tested Rocket League and it unfortunately doesn’t work because of anti-cheat on arm devices, but other games work fine)
[Edit: Nevermind, they now release it on steam directly, get it easier from there]