There is no evidence that "penis enlargement" methods work.

There are all sorts of things online that people claim enhances penis size. Pills, lotions, exercises, etc. The truth of the matter is that there is absolutely no verifiable evidence that these things actually work. People claim it all the time, but have not been able to provide proof of their claims. No studies show any efficacy in such things. A popular one is jelqing, which is an exercise involving squeezing your semi-erect penis while stroking it repeatedly without letting it get hard. This can actually injure your penis. Pills and lotions are supplements unevaluated by any accrediting body, and can contain harmful ingredients that can damage your health.

The only thing that can actually increase the dust of your penis is a dangerous surgery that makes it less functional in the best case scenario, and causes an infection that requires the penis to be amputated in the worst case.

All in all, there is no safe way to make your penis bigger. What you have is what you have, and that's okay.

Edit: For those of you wondering, I've tried jelqing. Nothing happened.