If you dont want to get in trouble when you're doing ota-updates please read the second post on the first page of this thread:
As this ROM has a working ramdisk sideloading the magisk apk is enough, just as it is
on every other device, no bootimage with magisk included or installing to recovery is needed!
I also strongly recommend to use Lygisk
which is a fork of Magisk that aims to improve support for devices with FBE that can't (and shouldn't anyways!) decrypt userdata in recovery,
this will also fix OTAs getting stuck while having installed Magisk.