twrp – Backup LineageOS Lake to Linux PC

How could I achieve the above without TWRP? can this be done with ADB?

The official LOS guide specifies using Lineage Recovery. I heard TWRP needs manual application of Lineage update rather than LOS automatically applying update itself. Does this still hold true?

I need to run with image backup as losing everything is very frustrating.

Phone in question is Motorola G7 Plus running LineageOS 17.1 hooked up to a openSUSE PC.