I would say for single professional you'll find 5-8 below average and max 2 average handymen. The entry barrier is very low and pay ridiculously high. Some examples: stairs were installed and all the cables extended in very amateurish way, but the main grounding cable was cut. Stairs never properly mounted, rather hanging in place by accident. Every extension of wiring ever done is also bad joke. Some original wiring was never replaced. Tiles in one bathroom are bad joke, the lines in the corners are at least by one inch off. Water lines installed destroying half of the brick wall. Lintels basically hanging in the air. 3 glass windows were drilled through to install manual blinds. Nothing dramatic, everything is repairable, but everything was done to make some quick money and must be re-done proper way. Destroyed wall parts rebuilt, proper lintels installed, whole electrical system renewed (I am electrician too).

The single scary thing is the roof. I fall, I die (best case). So I will hire professionals for it.

Edit: some numbers. A guy plastered whole house inside and outside. Took 18000€ in cash and wrote a bill for another 18000€. That’s 5-6 months engineer’s salary. Plastering took 3 weeks. I had many offers for week’s task asking my whole monthly salary in cash. This kind of money attracts not only artisans, but also all possible scammers.