I just think its weird how im normal but my penis hasnt grown in size or growth at all. and i was told there was a chance it could grow more is there a natural way to make it grow an inch or two if i could grow that much id be perfectly fine?

At 25 you have what you will end up with. There are many advertised supplements of exercises that promise to add length or girth, but these are a way to enrich the promoter, not gain penile size. An enterprising urologist may be willing to build one to order (with limited surgical success).

At your age, penis will not get any bigger. Any quack treatments you engage in will lighten your wallet and possibly harm your health. Learn to live with what you have.

Just like one's height normal size of penis is the average of a variation in size and not all that important as long as it can be erect and provide normal sex and other functions. So relax and enjoy what you have