You need to shave your body
Buy some panties, garter belt/stockings and a bra. Get one with a b cup at the biggest, A cup is better because it will actually fit to your chest.
Wear that under your male clothing, wear a button up shirt and loose fitting pants, get a bottle of poppers and head to the closest adult store that has a viewing booth or theater area.
Walk in, open the front of your shirt, unbutton and lower your pants at least far enough to show that you are wearing stockings and start rubbing your tiny dick through the panties.
WHen a guy comes over, take a HUGE whiff of the poppers and hold your breath as long as you can, it should hit you like a wave just as you have to exhale.
You will be turned on beyond belief, grab their cock if its out and drop to your knees and suck. If theirs isn't out, rub the front of their pants till it comes out.
I would also recommend leaving the house with your asshole at least a little lubed because you might get fucked. Go prepared, take a small bottle of lube, some condoms and a travel sized pack of baby wipes.
Enjoy your new life as a submissive sissy, serving real men.
That is why you were born with such a small cock. Don't be embarassed, just know that is your place in the world and do your best to make real men happy. Be their cum receptical.
As for you being horny, you don't get to jerk off anymore. You can cum, but you have to use a vibrator on your little dick. Get one of those plug in the wall wand types, I promise you it will make you cum like a motherfucker, it works no matter how big or small your dick is.
But guys like you, you are only allowed to cum like a girl from now on.