LGS-Helper VS steamtinkerlaunch

You can find it by searching LGS-Helper in Github

You probably mean SteamTinkerLaunch

I've tried all of the known methods, the one using bottles:https://github.com/thesupersonic16/HedgeModManager/wiki/Running-on-Linux-(Wine), the one using Steamtinkerlaunch: https://github.com/sonic2kk/steamtinkerlaunch/wiki/Hedge-Mod-Manager and the one that used to work but doesn't anymore:https://linuxgamingcentral.com/posts/updated-sonic-frontiers-steam-deck-modding-guide/ The bottles method worked a few weeks ago (although a lot of codes and mods didn't work) but doesn't seem to work anymore, the program doesn't seem to recognize the .yml configuration file provided in the guide anymore, I even tried installing the dependencies manually but the game (Sonic Frontiers) doesn't load the mod loader (the game launches but without mods), perhaps bottles doesn't use .yml files anymore ? The Steamtinkerlaunch method using Proton 7.0 also manages to install hedgemodmanager but once the mod loader is installed the game simply won't launch (I even tried providing mscore.dll but doesn't seem to make a difference). The method detailed on linuxgamingcentral.com used to work but now doesn't anymore, probably because steamtinkerlaunch now also tries to install .net 40 and .net 48. I get an error along the lines of "error, couldn't load mscore.dll to display the correct error message, please reinstall. Net". I'm losing my mind over this. Does anyone of you have hedgemodmanager working on Steam Deck ? If so how did you do it ?

Or maybe Steam Tinker launch (if using steam): https://github.com/sonic2kk/steamtinkerlaunch

This, right? This results in the following error:

Hey. I'm currently trying to get LiveSplit to run in the same Proton instance as a game (so I have the autosplitter available). I've managed to get that working by using SteamTinkerLaunch (https://github.com/sonic2kk/steamtinkerlaunch/wiki)

Click "Add Version", then install the latest SteamTinkerLaunch

Make sure to check the wiki on GitHub. It has a page for troubleshooting and the second entry sounds like your problem.

I recently had a nice discussion with the STL dev (steamtinkerlaunch#813). This might give you also a bit of insight.

There's steamtinkerlaunch for vortex/modorganizer there's also protontricks to mess around with each game proton prefix and etc. You'll have to Google these to get a better explanation but these are just the options I know of.