I don't have a good answer for you @mimaret When I get to the point where I'm getting strange error messages, I bite the bullet and start from ground zero. Fortunately, with the RPi you just need a new SD card.
Start with a fresh copy of the Raspberry Pi OS. If you enable SSH (and WiFI) when you create the image, you can do everything headless (without keyboard-mouse-video) by running raspi-config via a remote terminal ( PuTTY ) If you enable VNC with raspi-config you can have access to the GUI.
Double check your radio wiring.
Don't have anything unnecessary plugged in.
Carefully follow the instructions
I've done this tedious process many times. My RPi's are 3B+ and Zero 2 W. Here's what I've encountered:
bad power supply
bad SD card
bad wiring
corrupt download
and, of course, more user errors than I care to think about!
I have not come across bad RPi ... no, not true! I had a Zero 2 W with a bad WiFi chip (common problem). Overcame that with a USB WiFi dongle.
Good luck! Let us know what you discover.
-OSD
