[XB/PS] Unable to Save, Error Code: 34 & 21

I’M BEYOND angry. 2 YEARS of a multigenerational family GONE. My save is GONE. And when I try to play those families from my library and start a new game I can’t save them. My daughter’s old saves? Can’t play them. She has 2 saves - one family on each so not big files. I had one save. GONE. This new pack/update RUINED my game. I have EVERY expansion pack, stuff pack, and kit pack. $2k down the drain. THIS IS A HUGE PROBLEM - saves disappearing?!?!? Makes the game UNPLAYABLE. DO SOMETHING