Help needed

I have trying to increase the size of my penis for around the last 8 months I do all the streching exersises and warm up warm down things everyday. I also take supplements that are herbal. But in eight months I have seen no increase in size. I am happy with my length at 8.2 inches but it’s my girth I am trying to increase this is only 4.4 inches when I am erect. Has anyone got any ideas to what I am doing wrong or what I need to be doing,

I am 32 my penis is uncut, I drink lots of water and take supplements that are said to increase blood flow to the penis. Please help

8.2”?! Holy shit, God is not allowing you to gain a millimeter because you are already too big.

Ok, let’s go ahead. Herbal or pills won’t make you gain anything. It is hard to gues what you are doing wrong. Do you do jelqs? If you are uncut, maybe dry jelqs would be easier - but do less of them, dry jelqs are more intense than wet jelqs. I’d cut out stretching, I don’t see the point in doing them if you are so long.