My bed is so far from level its attrocious, 0.4mm deviation is "acceptable" how the hell is that ok? If you printed at 0.4mm you could barely get contact from front to back if that was the case!
Use octoprint, do a bed visualisation and you will see how far out of whack your bed is. I bet it looks similar to mine :
It is not impossible to print on this machine without stuffing paper under a corner to try and "level" the bed which has no bed levelling dials - I am retro fitting them to this as no way can the BL touch on there resolve these issues, at best it can deal with 0.1mm deviations AT BEST.
I have 3 creality printers and they will be my last, some of the chinesium attitudes to build quality really, really show. When they work they are beautiful machines. When they don't they really really don't.