Error code 21 and 34 when saving and Deleted saves

Hi, I have been playing the Sims 4 for years on my Xbox one with no issues. I want to say with in the past couple months I have been noticing my saves diapering and/ or not saving. Just recently I have (about a month or so) been getting the error code 21 and 34 when saving, but not only that is it not saving the progress I'm working on, but it also deletes old saves. I have gone through my gallery library and delete anything I may have saved from the gallery/ I have followed so many different things to try to fix what may be happening but still nothing. At this point it I can't even play because nothing saves at all. This is my only outlet during hard times, and this week is probably the worst week 😔, I just want to play soon. Thank you for your time. 💝