No taskbar, no winkey, no settings after not using my pc for a long time

Hello,

I have updated to Windows 11 in April. Since then I never had bigger problems than those that I could easily work out.

I have been on vacation for nearly a month, leaving my pc in good condition, with 100gb of free space on my C: drive. Today I arrived at my house and when I turned my pc on, the first thing I could notice was that my taskbar strangely disappeared without trace and I couldn't access the start menu by pressing win key. As a matter of fact, win key stopped working for any action, win+r, win+s, win+i does nothing. My pc was off the whole time and I didn't do anything with it, nor someone else did while I was away. I thought that the taskbar will just load after some time but it didn't, restarting didn't help as well. It's like I'm locked out of my own pc but atleast I can access my browser. I tried to open settings to check if there are any updates, but I can't since winkey doesn't work and I have no taskbar. When I clicked screen settings on my desktop all it did was showing an error message about how there is no program linked to what I want to do.

Another strange thing is that as I said, I was leaving my pc with 100gb of free space and now, I have only 40 and the bar turned to red, although there are no new programs installed at all!
I can't even open geforce experience to try to update the drivers.

Here's what I tried:

-sfc scannow in CMD

-DISM restore health in CMD

-trying to repair my drive from the explorer

But none of these things did a thing.

Even if I wanted to reinstall, I can't, because I can't access settings.

Please help.