Unity 5.6.7f1 Installer error

I have a 32bit system and I was installing Unity 5.6.7f1. It worked, but after I uninstalled Unity, the setup is giving this errors when I try to reinstall it.

Also it’s unable to install Unity Documentation

Aaaand then after skipping every installation, Unity doesn’t run (obviously)

Since I don’t have 64 system and I can’t afford to upgrade, please help me install Unity 5. *Also I can’t use Unity Hub on 32-bit system.

It was working just fine for a whole year. But I decided to reinstall it.