Frequent masturbation in the past does not cause permanent sexual problems, so your symptoms of low libido and premature ejaculation are more likely related to stress, anxiety, overthinking, or lifestyle factors rather than physical damage. The first step is to reduce performance anxiety by avoiding guilt, maintaining a healthy routine with regular exercise, good sleep, and a balanced diet. Techniques like start-stop exercises, pelvic floor (Kegel) exercises, and focusing on relaxation during intimacy can help improve control. If needed, a doctor may suggest counselling or medicines for premature ejaculation or evaluate for other causes of low libido. If symptoms persist, it is best to consult a doctor or sexologist for proper guidance and reassurance.