Today I installed Lineage OS on my phone. Afterwards, I decided to use root with magisk.

Due to my ignorance, I flashed patched recovery into the boot partition, which resulted in a bootloop. I realized my mistake, proceeded with installing Lineage again, and then flashed patched boot image to the corresponding partition. After that, I got a bootloop again, but it can be overriden by holding Volume up + Power while booting.

All the changes I make in the phone (e.g. installed apps, settings) persist.

Probably, my ROM is goofed, but it is still able to boot from recovery.

I think I should reflash everything from scratch, but I'm not sure about the order. Should I reinstall Lineage first and then reflash the boot image?

UPD: This did NOT work.

SOLVED: I flashed a non-patched boot.img provided by Lineage, now the bootloop is solved. The actual problem was that I have patched boot.img NOT right on the target device. Flashing non-patched image provided by Lineage fixed the bootloop.