Magisk Hide is Magisk module from https://github.com/HuskyDG/MagiskHide
I've cleared Play Store cache/data as per instructions in https://github.com/chiteroman/PlayIntegrityFix. I didn't clear anything else's data/cache.
Also you may need to hide Magisk with different package name.
I have pretty same device (K20Pro/raphael/12.5.6) and spent several hours trying to install this module.
Seems like it needs Zygisk support in Magisk. But Latest Magisk breaks system after enabling Zygisk (even modem/sim cards won't boot up).
Previous Magisk (21.2) isn't breaking the system but...