Installing the modpack on an unsupported or official launcher - Hayerhi/orange-must-have-optimization-mods GitHub Wiki

first step of the install is to go to the Orange optimizations GitHub page

click on the latest release

download "Source code (zip)" and extract files

go to "\orange-must-have-optimization-mods-pack ver\profile\mods" and copy all of the mod files

open your game folder (by default C:\Users\user\AppData\Roaming\.minecraft) and open the "mods" folder then paste all of the mod files (if the game "mods" folder have files in it before you pasted the modpack ones, delete them)

go back to "\orange-must-have-optimization-mods-pack ver\profile" and open the "config" folder, inside of it copy all of the files

open your game folder again and open the "config" folder then paste all of the config files (if the game "config" folder have files in it don't delete them, just paste the new ones)

download fabric loader in the installer make sure to select the minecraft version the modpack is on (check on the Modrinth page)

open minecraft launcher and select "fabric-loader-game ver" installation and click "play"

done!