ss wrote:

Several rooms are much the same, I cant afford to get the rooms skimmed
and my own attempts at skimming fall well short. So looking for my best
DIY options.

Strip the lining paper, replace any sections of plasterboard that need
it, remove the machine-gunning of rawlplugs, rake out anything loose,
undercut a sharp edge in the face of the plasterboard, use a wide taping
knife to "bridge" to nearby level surface, fill (ready-mixed joint
filler is good for buying as a bulk filler and sands very fine) and sand
it down ... expect lots of dust.