Hooray! Some news.
I entered bootloader mode through Recovery, then just booted into my patched boot.img from the latest update (which was done with Magisk 24.3, but my app right now is Magisk 23.0). Developer options are still not there, HOWEVE, root functions work! I should be able to run pm enable commands now

For this, I can either use my overkill Termux or use one of the preset button in Total Commander which enables adb.