moofison Your last post didn't specify that you'd tested without your mods. You said the problem wasn't your mods, but lots of players say that when they haven't tested without mods. In fact, I would guess that most players who say the mods aren't the issue, but don't specifically say that they tested without mods, have not in fact tested without mods; they've simply updated their mods or run a conflict detector or done some other checking that isn't completely reliable.
At any rate, do you want to try to salvage your main save? If so, try again to load it, and see whether you get a lastexception in Documents > Electronic Arts > The Sims 4. I only want a new LE, as in, with a timestamp from this attempt to load the save, and with your mods and any custom content still removed.
You can attach the lastexception to a reply here if you open the file and delete its first line.