Did you follow the tips I gave alan1 above? There may be held back apps. Doing a dist-upgrade may break things badly, so if doing a listing of held apps shows anything, then I recommend updating them one at a time to see what gets broken. Most should be OK, but they is often one that may be causing the others to be held back as well.
sudo apt list --upgradeable
if anything shows up then one at a time do:
sudo apt install --upgrade-only (app name as listed)
If one looks likes its going to break everything, it should warn you and you can back out until you understand what will happen and how to fix it. Try the others until you are left with only the breakers.