Bikes are clumsy to work on. You have to remove wheels and components that the bike requires to stand upright. You will also have specialized tools and stands that take up some room. With a dedicated area to work on bikes, you will be much more successful in your attempts to work on your bike correctly.
After several failed attempts at getting local bike shops to do correct work on my bike, I decided it was time to start learning bike maintenance and wrenching on my own. In one specific instance, I was riding a local trail one hour after getting a new fork installed, and the front brake fell off during a downhill. It was at that point I realized that if I wanted it done correctly, I needed to learn how to do it myself. That next day, I went out and bought an Ultimate repair stand and several essential tools.