Thanks @ankmairdor, yeh thats true @angeraw
As it says in the "Modding Help" sticky thread at top of this forum (follow link in there) you install mods by copying them to your mods directory then using the "Mods" button/interface in the game
https://itch.io/t/281510/modding-help
https://strive4power.fandom.com/wiki/Modding_Guide
This modding system works great for users, you can safely update your main install (kept separate from mods directory) and enable/disable any mods you want at any time.
Ill put a note at top of OP for it, just remember always a good idea to check out sticky threads in future :)
Hope that helps