Basic breathing exercises work better than chemical injections.
It sounds like your approach to fitness is more in line with Matt Furey. I’m glad that works for you.
Steroids do work. It’s why bodybuilders take them.
Aside from shrinkage issues, they work.
I would never take them myself. I’d rather bench 200 lbs, knowing that I worked hard to be able to do that, rather than 500 lbs knowing that I had help doing and had future health problems as a consequence.