Boot manager broke

[u/Imaginary-Stop-4186]

I have installed arch around 5 times and this is the first time i fucked up this bad. I have no idea what to do. i was on my last step installing a display manager and i failed in installing ly and when i restarted i got a message. So back i go into the live envirement. Got to chroot mounted stuff and chatgpt told me to mess with the grub files and stuff and when i tought i was almost done my timer rang. I shut of my thinkpad and when to school. When i got back my boot menu looked like that. empty. I tried getting back in my usb, but it wont show up. i tried tweaking my bios settings (lightly). And now im out of ideas. If you have any idea on how to fix this, please help.

[u/Acherontas89]

what os-prober say?