I have a big problem, I was trying to use Python3 on my PC and it seemed like Python3 wasn't there, I tried installing it and it said Python3 is already installed.

So I uninstalled python3 and reinstalled it, that's when everything stopped functioning properly, then I rebooted the PC and it showed a long log then got stuck and doesn't even reach the lock screen.

I firstly ran 'sudo apt update'.
Then ran 'sudo apt install software-properties-common' and it successfully installed.
Next I ran 'sudo add-apt-repository ppa:deadsnakes/ppa'
After I ran 'sudo apt update' again.

second step
I ran 'sudo apt install python3.8'
Out put indicated that python3.8 is already installed.
When checking the version with 'python ––version'
Output was "command not found"

That's when I ran 'sudo apt remove python3.8' then after that 'sudo apt install python3.8'
It did install some of the files and finished but things stopped functioning.

I would show the log if I knew how