As I do my share of research (I am just starting out) I tend to see a few categories of guys. I have come to the belief that IF DONE RIGHT, and you find the thing your body responds to (I.e. Some might respond better to stretch, jelqs, hangers, pumps, etc.) then you will either be 1) a big gainer (small percent), 2) a moderate gainer, 3) a hard gainer, or 4) a no gainer (small percent).
I’m willing to give this PE thing a try for a few months. So far I’m just doing a light version of the beginner routine. As far as trying things - I’ll stay where I’m at if it works, maybe ramp it up to more if it doesn’t. Beyond that, maybe I’ll pump, but I’m not going to do anything beyond that (I think). I’m by no means well endowed, at 5.5” BPEL and 4.5” EG, but if it doesn’t work for me I will quit. There does come a point of diminishing returns. Hopefully, this works. If not, my wife still loves me. I give her orgasms every time. What else do I really need? A bigger dick would just be gravy. Gravy’s good, but I’m not going to beat me head against a wall for years if it isn’t meant to be.
I hope you find something that works, or at very least stop beating yourself up over it.