updated Ubuntu to 21.04 / deleted python3.8

Hello,

today i was asked on Ubuntu to upgrade System as it no more secure and i did.

at the end it asked to me to remove about a 100 packages, and i did, but among those was also python3.8 , and it seems it is no longer installable outofthebox on Ubuntu 21.04 as it relies on Python3.9

My question: how is it possible to get SVPTube still working because i rely on it due to slow internet connection for picking best playback video?

thank you very much.