Masturbation doesn't cause any of those things.
Acne - https://www.healthline.com/health/healthy-sex/does-masturbation-cause-acne
Hair loss - https://www.medicalnewstoday.com/articles/321153.php
If you have acne, that could be due to hormonal changes (you're still a teenager), or needing to improve skin care. If it's bad, see a dermatologist. If you have bone loss and hair loss, sunken eyes, and other symptoms, see your doctor. That could also be a hormone issue, nutritional deficiencies, but could also indicate some other serious issues, none of which have a thing to do with masturbation.
Please see your doctor soon. You don't even need to mention masturbation, as it's not a cause of anything harmful. Certain religions and cultures like you to believe this is so, and it may be a sin in your religion, but medically speaking, it causes no harm.
Hello~To my knowledge, masturbation does NOT cause these symptoms or issues. I would see your physician regarding them as they may be due to hormonal issues, thyroid or other problems.