Thing is, all the chemicals that actually have a meaningful effect also have meaningful side effects. Mood swings, fat gain, water bloat, dick not working, libido crashes, muscle gain disappear after steroid cycle etc. I think you'll be fine without them for quite a while.
I reckon you'll be surprised how much nutrition matters in this game. I suggest to get a gym trainer to teach you the basics of common exercises, read up on nutrition and ask for advice here, and give it a go. Unfortunately it takes a bit of time, but if you put in the effort and train/eat right, you should see a pretty visible change in 4-6 months.
Everyone started somewhere, everyone wished results came faster...