Windows look gone after reboot

[RednibCoding]

I restarted my computer and now my desktop looks like this:

Basically i have to bring up the icons at the bottom by pressing the "windows"-key, the taskbar at the bottom and everything is gone.
I dont even know why this actually happens.

I tried what was suggested here: Reset-Desktop-Settings but i get this error: error: The operation attempted to modify one or more non-writable keys

Can anybody tell me how i can revert back to the original windows11-look?

[Anduin2017]

Seems extensions system are crashing.

Please open the extensions manager via:

gnome-extensions-app

And enable all extensions.

[Anduin2017]

By the way, how did you encoutner this issue? Any critical change? Which version are you running?