I run multiple terminal apps. I thought I would try a few, and I never deleted any of them.

I used kitty-cat to edit fonts

https://github.com/adi1090x/kitty-cat

Boot into recovery or a different drive like usb key. You could also try safe mode, maybe you installed something that is causing driver conflict.

I bought a used Lenovo ThinkPad X240 Laptop i5 | 8GB RAM | 500GB HDD | for 50$ as a couch laptop to run Linux / Python code. I can browse the internet and it’s light.