I literally cannot use illustrator anymore

As the title says, I literally cannot use this software anymore. I attached a video for an exact simulation of what's happening.

Out of nowhere, starting from today, I cannot save any file that has either text in it or sometimes embed images. I tested everything with the font "Myriad Pro", the default one, it doesn't matter what font it is anyway.

I have a pretty simple file that I'm working with and I can simply CTRL-S any time I want and each time I'm doing so, the file saves almost instantly. If I'm adding other shapes, like a square, for instance, I'm able to ctrl-s or hit File>Save and it saves automatically.
Then I add a font, I hit the Text icon, put the text in a random place and when I press CTRL-S or File>Save in the tab, where the file name is, it keeps saying "Saving...", but it's not doing anything, trust me, I waited for 30 minutes, until I started to get really angry for losing almost many hours searching for anything useful.
I found that if you "Save As" and untick the PDF compatibility it should work, or should work better, but that's the exact moment it crashes almost instantly.
Also, I tried that with any .AI file that I have in my folders, I tried creating new ones, I reinstalled the software, also the "AI" icon in the taskbar is just a blank file for some reason...

Anyway, can anyone help with this? Am I doing something wrong? I've been working with AI for some years now, but I feel totally powerless in face of this issue. I legit don't know what I can do and this creates huge hole in my work progress and I'm losing so much money on these issues. I saw people having these problems for 5-6 years now... how on earth is it possible to have such software issues in 2022?

My PC setup:
Windows 10 pro (updated)
CPU: I9 - 12900K

GPU: RTX 3080Ti

RAM: 64 GB

SSD m2: 2TB