I Just Can't Understand How to install fitgirl repacks on linux angielski

hello fellow sailers , hope you’re having a nice day , a few months back i switched to arch linux because my computer has good ram but not that good gpu , but now i would like to play some og games like portal 2 , portal 1 , inscryption etc from fitgirl repacks and i have scoured through many guides but nothing just works ,...