when the mod is installed, the game crashes instantly
logs:
latest.log

is optifine installed ? : no
version used : 1.17
mod loader: fabric

Can't seem to reproduce this. Launches fine on my end, I can only suggest you the new version, but it works fine on the previous version too. You seem to have a lot of mods installed so it might not even be Health Overlay's fault as there isnt a crash at the end of the log.

crash happens to me as well.. had to revert to last version