Need help with walls

Have been trying to get a smooth wall since I got this printer- have tried everything over many weeks and still all prints look like this, I’m not new to printing but I can’t get any result change with this printer. Do you think it’s defective in some way?
Is there some secret, my other printer prints beautiful walls
I emailed Creality, but you know how that is, pretty much useless if you even get an email back.

Hello QuietMike,

I don’t have your model, but it looks like your Z offset is too high.

Cheers.