If the wall of your house is not good and you have the intention to change it then of course you will think how much budget you need for it. Because we agree that to do the renovation of the house required a lot of funds. And sometimes that thought will actually spoil all your plans. Therefore let us think together how to renovate the walls of the house at a cost that is not much.
One idea we want to convey to you, what if we use textured paint may be better to replace the skim layer (you still have to patch the former point of gouging first but you win need to make it perfect). If you have a very heavy texture pattern, the first coat will not produce perfectly smooth walls. To begin with, you must have a wall based on the level of damage (for example, walls with decades of accumulated neglect), some walls may have to be fully skimmed, to create a new surface. You can hire an expert for the retexture wall for you.
There are several types of cement available, for example one type is made to repair surface cracks in concrete. When the concrete is a bit stiff then it is possible to do the smoothing it out. Extra concrete is not hard to remove, just do not wait until the excess is completely dry.