Base game disappeared

Hi, 

I've been playing the sims 4 for a while now on my MacBook Pro M1 2020, and as I logged on yesterday I noticed most of my base game features have disappeared. I don't have Oasis Springs, Newcrest or Willow Creek anymore, along with missing base game floors and more.

My sims that lived in these worlds have also disappeared and I have no idea if there's a way to get it back, does anyone have any advice?

thanks!