i haven’t played the sims in years. but all my expansions/stuff packs are gone.

Sooo I’ve never posted on here but I don’t really know what to do. The last time I played the sims 4 was in 2020. I know it’s been a while. But lately i’ve been watching a lot of sims content and i wanted to get back into it. Obviously a lot has changed cause origin no longer exists and that’s how i downloaded and bought all my content originally. So when i first went into origin it said i didn’t have any games in my library but on my computer i could see that i have the sims 4. Then it made me update to ea and so when updated to ea and tried to open the sims 4 that was already on my computer it said i didn’t have any access. I had every expansion/stuff packs up until island living, i thought maybe i’ll just redownload the base game and see if it’ll just pop up. Nope, it said that my game content was incomplete and all the expansion packs it’s saying i have to buy them again. I don’t really know what to do, also my origin username was changed when i first logged back in too? Idk what to do I don’t want to have to re-buy all these expansion packs. I just have covid and wanted to play the sims while i’m stuck at home. Also all my old save files are still showing up but not the content used to make them? I attached pictures showing my save files still appear and also the pop up that comes up when I try to play with those save files.