How to remove (reinstall) broken Python on Debian Linux 10

I have problem with multiple versions (Python 3.7 from old Debian 9 buster, Python 3.9 from new Debian 10 bullseye and third version Python 3.9 installed from [...]

Debian 11 Gnome not start after update

X window system crashed on boot PC. I have Gnome. Fuck up. After one hour of downgrading packages showed by command awk '$1=="2022-08-15" && [...]