Just use Sphaira. Stay on 19.0.1, keep your mods working, sys-tweak and for new games use SAK to patch new games that need higher firmware.
There is only so much you can patch on 19.0.1 though , once it use new sdk people are going to be forced to update if they want to play new games. To be honest ain't that bad to be on 20.x.x.













