What can I do to better manage my overwhelming sexual desires by my own without a counsellor/psychologist? How can I stop masturbating and stop watching pornography?

You can just try to abstain from it or try to find a partner, going to the gym would help as well.

Slowly limit the stimuli you allow arround you, and take it one day at a time. Make the decisions to contol yourself at this moment, then do the same for the next, and the next.

Sorry to hear that you're struggling with intense sexual desires. My friend went through the same thing, so I think I know what you're going through. In my opinion, it would really help to distract yourself with your hobbies, go to green spaces (e.g. parks, lakes) or talk to people more. Also, avoiding sexual materials in cultural products and stop sleeping nude are simple ways to decrease your urges. Good luck!

Be productive and occupy yourself. You can go through other interests you have or maybe look for new interests. Like exercising or learning a new language.

This is really hard, its something I have had to wrestel with myself for many years. First off try and be kind with yourself, you have to wan't to stop not becasue you hate yourelf for it but becasue its your choice. Then try limiting your access to it. block your favorite website and turn on safe serch. Be kind with youreslf and try to distract yourself with physical activity like running or in my case roller skating.

Try to understand where those urges come from. And when they do come, ask yourself what you're feeling, and what you're hoping to achieve through sex. Are you doing it simply to orgasm, or is there something else?

It's well known that exercise is best at this. It won't supress all the feelings but will keep you distracted. Keep busy. The worst enemy is leisure and boredom. It will be hard!! As any addiction is ok to fail. Take babysteps. If you do it, let's say, twice a day, stick with only once a day for a week. And then 6 days a week. And then 5. Talk to someone. And try establishing relationships. One thing that makes pornography is that it distort your view on relationships and people. So you have to get to real people, friends, family. Get to know each other.

Sometimes sexual energy can be aggressive energy. It is best to channel that energy safely. Exercise when the urges become overwhelming and breathing exercises to calm oneself after releasing aggression.

Advice that I read a while back said to channel that kind of energy into other activities. If you get the urge to masturbate, go workout instead. I'm not sure if this is the answer you are looking for, but it's an alternative at least.

Try and focus on other things that you enjoy and limit the amount of time you spend masturbating and watching pornography. If you start off with a higher number of times a day, and decrease every week maybe? It might help if you find yourself a sexual partner.