It looks interesting, Void is very solid but it miss some package and I’m not a fan of flatpaks, also the focus on KDE is nice.

It’s probably less boring/time-consuming then fix ubuntu update issues, but you can try searching for ubuntu users’ reddit or forum for your specific problem.

Good time to change to a better distro imho. You could make a live USB, recover your files to another USB, then proceed to install the new distro.

I’ve made a guide for repacks: https://slrpnk.net/post/12840703