The camera is probably one problem with lineage Os. It's shitty at best.
I had to move to a third party app called Open Camera. It's not perfect but it does make up for the problems with the lineage os camera. https://play.google.com/store/apps/details?id=net.sourceforge.opencamera.
Moto Actions thankfully still exist. There is a minor difference like that the Moto flashlight chop can be triggered with a weaker chop and instead of two vibrations it has one.
Oh and btw, about that camera app, twisting does not change the camera to front or back, which is probably because it is a 3rd party app.
With all that said, LineageOS is absolutely worth it, given that I have a new update every Monday or so.