Re: Sims 4 is stuck on saving

@tamarablonk  Try again to load the save, and see whether you can save your progress without doing much of anything.  If not, you may need to undo the changes you made until you find the culprit.  Or, if it's easier, recover a backup save and pick up from the last good save point.

https://sims4.crinrict.com/eng/2014/09/recover-backup-save-game/

Either approach is fine; just pick what feels simpler to you.