What you really need are means of power, not hobbies.
and some austerities, just to avoid the fap urges.
You are faliure now. Everything changes, everything fluctuates. But a wrong thing is to base yourself on what you can or cannot do. I am also a failure, but… ¿should I care if this is not being dangerous to me?
If you don't have any purpose,
preserve your youth for the time (whenever it may be) it comes to you.
Hobbies will not truly satify you, your priority now is to eliminate the urges of fapping without losing your essence. Use fasting, tough sports, (really) cold water. Also leave meat, become vegetarian, it may help.
You won't do a thing if you are still losing your personal might like that, it's a fight between you and your inner cockroaches.