KDE desktop freezes after login

Hi, I’ve been running Fedora with KDE plasma on a Acer Aspire 3 laptop for a few months and now I can’t use KDE.
After login in the screen freezes and does not respond to the cursor (Proton VPN, which I configured with auto-start still showed up in screen).
I could only start konsole with Ctrl + Alt + T and use the power button to get to the exiting panel (I don’t know its actual name) and there I could use the cursor to select the log out, restart, shutdown and lock options.
I reinstalled KDE but didn’t had any effect.
How can I fix this?