Together with all the other information you’ve shared, it’s not entirely clear why it has failed; at least to me.
If you’re not married/tied to the installation of Debian, may I suggest installing Linux Mint, Pop!_OS, Tuxedo OS or Zorin OS instead?
There are of course many other distros you could choose, but the earlier mentioned ones are ‘stable’ like Debian is. I thought that perhaps it was what attracted you towards Debian in the first place.