Did you try to tram your x-axis? Looks like it’s higher one one side then on the other.
Here’s an example on how you can do it: Milling the cnc wasteboard flat (or so I thought): mis-aligned z-axis modules - #15 by eh9
(you can use anything that you have two of and are the same size.
You could even do it just off the bed.
You could also try to pull the x-axis up all the way (powered off) and see if that fixed it.