magisk causes issues currently with this rom (idk if it's device related or general bug), some sensors stop working when you flash it.I must be out of practice. Still getting random reboots, and still can't install Magisk. I clean-flashed the ROM and MindtheGApps 11. ROM booted fine. But once I start adding apps, it randomly reboots, especially while using Prime Video. Meanwhile, I can't get Magisk to install. The method of changing .apk to .zip and flashing seemed to work fine in TWRP, but after booting, the app said unable to parse package. OK. Took advice above and installed Manager 8.0.7 and updated from there. Now on Manager 22, but I have no option to direct install Magisk, only to patch a file. I don't know what file, since it asks for an .img or .tar, and I only have the Manager apk. I tried looking it up, but every single guide leads to another guide leads to another guide leads to steps too involving for a simple installation.
Can someone give an out-of-practice user step-by-step Magisk installation instructions?
Anyway, I had the same issue about "Parsing package". What I did to fix it is that i flashed lineage18.1 and mindthegapps then flash magisk directly after them without booting first to system (All this done from lineage official recovery), then after completing android setup, simply install magisk apk over the one currently installed as system app. It will start normally then.
Currently I reflashed lineage without magisk as I don't need root anyway, I was just keeping it for Just in case I needed it