ubuntu 20 gnome reinstall -- 2

Job ID: 32642976

Budget: $10 – $30 USD

My system ubuntu started getting broken recently. I noticed this first when I first accepted bootload update from Hewlett Packard (my machine is HP Z workstation). My keyboard (tilda, ctrl, alt) started acting up and couldn't type Korean.

Recently I added VMware for a testbed platform I am learning from Udemy. Now my gnome-terminal couldn't be started.

In short, I noticed some issues as follows;
apt_pkg, no module named
apt-add-repository not working
Freezing after bootloader

Is there any way to reinstall (no format) as explained here https://phoenixnap.com/kb/how-to-install-anaconda-ubuntu-18-04-or-20-04, which should be taken as an example as I am not sure if their suggestion would help me to achieve restoring my old system.

my budget: usd 30
your task: to restore my old system by fixing issues i have; documentation of your progress