Python3.8 on ubuntu khadas

I found out that I can’t install python3.8. I want to have it in /usr/local/
Plus wanted to ask about errors and fails while unzipping smthing or using apt
Also, do you have an archieve with old versions of ubuntu, because I want to reinstall 20.04

Hello @Agent_kapo

Can you try this ?

He throws error on apt upgrade

and also this

while installing python3.8 he throws: