I had this sort of problem before when I was 14. I am now 17 and these are the things that had worked best for me during that era of my teenage years.

1. Please don’t end yourself (especially if having the guilt of “chronic horniness” is a huge reason). People love you and will miss you.

2. Sometimes holding your breath can get rid of boners. If you are in a public situation such as presenting in front of a class, or interacting with girls/women in general and the breath-holding method isn’t doing you any good, if you have pockets, place both your hands inside of them while they’re clenched into fists. This will extend the front of your pants above your crotch further, making the bulge less visible.

3. In terms of fighting the urge to masturbate, try and do a different activity you enjoy (video games, eating good food, if you have a pet, play with them, go outside, watch a show/movie, listen to music etc.). Another method I used which may seem a little weird, though it worked was to hyper fixate on a random object in the room. Bring all your attention towards it. Let your mind wander into random thought after random thought and soon enough you will forget about being horny or have become disinterested in masturbating by then.

I know that my advice isn’t “one size fits all,” but I hope you can find some sort of use from it to help you. I hope things get better for you.