Computer running on Debian 12 now only turns on in tty1 mode and I cannot access the GUI

I have an ASUS ZenBook 14, and I have been running it on stable Debian (now 12 Bookworm), and GNOME destop environment since I bought it. It has never given me any problems. But today after installing the platform Anaconda (though I am not completely sure this was the cause) this way: bash /home/"username"/Downloads/Anaconda3-2023.07-Linux-86_64.sh then I updated and upgraded the system in the usual way (sudo apt update & sudo apt upgrade). After turning off and later on the conputer, the system broke and the computer no longer turns on in the normal way. Now I am stuck in the "tty1" mode and due to some error I can use the terminal but no other interfaces are available. When running startx, a black screen appears with a mouse on it. I can move the mouse, but nothing more. I think the "AE_NOT_FOUND" note that appears on the screen when turning on is important. As I am quite sure that wasn't there before. How can I fix this? I will share the photos of my computer to see if you can find the clues that could fix my problem. Thank you very much in advance!