can't load saved scores and musescore will crash

Unfortunently, I doubt the reader will be able to reproduce the issue, but I will explain the issue to the best of my abilities. I create [my first] score on Musescore 3. I'm sure it was the latest version because I had downloaded it less than an hour ago. I hit save after I want to call it a night. File explorer opens and I go to find a spot to save my score, after a few seconds, Musescore freezes for a few seconds, then crashes. I reopen it "the last project didn't end properly, would you like to recover it?" pops up and I hit yes. it brought me back to my score. I hit save again, but this time saved it as fast as possible because I had figured that if I saved it fast enough, it wouldn't freeze in time and crash (which had happened every time after multiple failed attempts before this particular one.) I successfully save and Musescore crashes right afterward. I check file explorer -> documents ->musescore 3 -> scores: and there is a file named "(the song name).mscz.temp". So I'm happy it saved, but to make sure it really did save, I reopen Musescore, hit no when it asks to reopen the last program, and I try to import the score to see if it worked correctly. On the third or fourth try, (because of the crash when file explorer opens) I manage to get to the file and double click on it. Nothing happened. It made a noise which meant that it wasn't frozen, but that was it. so, I try again, and again. Still, nothing. I get a little worried and decide the next plan of action is to just try to open the file itself, which of course failed. Then I realized that the file was ".temp", and the import does not accept that type of file as you know. Unfortunently, I cant upload the file because it is .temp :/
Ps: I'm on windows 10, and I don't believe that the fact that my computer is slow is a problem because it was the only app open on my laptop. That's about it