[CURRENT ISSUE] I don't know how to put 'save files' back into the game

Most direct and correct answer!💖 Thank you.... so simple and effortless to do too.🙏

@pineapplebel  In order for saves to be read by the game, they need to be located in Documents\Electronic Arts\The Sims 4\saves.  You can just drag and drop your saves into that folder, and they should work.  Be sure to remove any saves already in there—either delete a new save you've created, or, if you want to keep it, renumber it so it doesn't share the same file name as your other saves.

@pineapplebel Please refer to this excellent post with the directions you need plus additional helpful info: https://sims4.crinrict.com/eng/2014/09/save-games/

SheriGR ☕ – I don’t work for EA