I'm sorry but not using a mod manager is just stupid and asking for all sorts of trouble. It's downright impossible to manually keep track of all the mods you install in case of updates or potential removals.
I use this version of MO2 in Starfield just fine, just had to use the pipx version of Protontricks since the one from the Fedora repos & the Flatpak version were both borked and caused an error during installation.