I HATE My Body So Much!! Help111?

Hi there. I just need advice. I am a 16 year old guy. I am gay. And I am very self conscious about my body. I am 5 foot 10 inches. Weigh 140. A few years ago I weighed around 155, and now that i have lost that weight, which is bad since now I am underweight, I have extra skin that is not even noticeable when I am standing up, but when I sit, I have some small rolls of skin, and I keep doing exercise, but I don't see any results. I hate my skin, I have a few pimples on my back, and I ALWAYS have at least 1 pimple on my face, it's annoying. I also am very hairy, I shave my legs, chest and arms already, but I always get those red bumps that just make my skin look worse. I am also very hairy on my butt, and a little on my upper back, which I think are both gross, and I don't want to shave my butt because I know I will only get itchiness and red bumps, and my back will just look messed up since I can't shave perfectly since I can't see directly where I'm shaving. And my hair, that is probably the worst. I am mixed with a lot of cultures, so my hair texture is very mixed, I admit sometimes it looks nice, but most of the time, I hate it, I can't manage or style it like I want to, and even though I get great compliments on how it looks, some people call it gross, and causes me to not like it because I point out the flaws it has. I am very modelesque, by this I mean that I am very graceful and know how to evoke presence, but I just don't feel like this body allows for me to show my true external beauty at its fullest. I admit, I do look at shirtless models, and I know that their bodies are sometimes photoshopped, but I know so many guys, friends in real life, whose bodies are perfect, and I wish I had their bodies, and not have all these things I have to worry about like hair, pimples, etc... I also feel like if i am gonna go out with someone, even though personality is most important, looks are too, and I fear so much that they are gonna be so grossed out. I'm not really doing this for others though, I am doing this for myself, I am a perfectionist, and I always try to do everything perfect, and this just causes me to get depressed, to see myself everyday and see these flaws that I can't really change. I want to feel beautiful for myself, for once. Can you please help me with some advice? No rude comments please.