@
Mark Yngell Kate and
@kj7
I found some lost backups, I uploaded, try these: Let me know, when it´s done.
drive.google.com
drive.google.com
There's no a complete and absolute guide. It's only all about sense, formatting the bad partitions, and try to restore them, either through a backup or a clean installation of a ROM, said that, you should try, by searching for a ROM from the unified RM6785 development, they are for all of Realme devices that have an MT processor with 6785, all of them can return the baseband issue, and some of them, with a specific combination files, the camera issue too.
If you found it hard to fix that, then take the effort to navigate, one by one, across all the pages in this thread, every insight can be useful and may do the difference, for you.