One reason you find Sketchup has very limited regarding 2d drawings is that SketchUp’s toolset is primarily geared toward drawing in 3D. While it is possible to draw on a flat plane, extra steps need to be taken to assure that you continue drawing in 2D.
I don’t create 2D components myself, I either use 3D or I will paint them in afterwards. I am using SketchUp on a XP-Pen Deco Pro Drawing Tablet . using a pen helps reduce RSI most associated with using a mouse .