"Threaded" prints (picture inside)

Hi guys

I am new here!

Recently my Creality Ender 3 has started to have some problems with "threaded"(?) prints. I have tried different types of prints, like draft and fine etc. and different filaments. The problem looks like the Z axis is unstable or that too little filament is being extruded...or something else. Maybe the nozzle need changing?

What do you think? Thanks!
Attachment 13682

was that printed lying down or standing up ?

Hi, lying down :) The side you see is the side while printing