Excessive masturbation does not cause the symptoms you mentioned.. such as the inability to grow a beard, hair thinning, or small testicles. These symptoms may occur due to genetics, hormones, overall health, and lifestyle habits.
But it's important to address your concerns regarding fatigue, depression, anxiety, premature ejaculation, and erectile dysfunction. Consult with mental health specialist for therapy and treatment. And visit your urologist to get proper treatmengt on ED/ premature ejaculation..