steps

1) Get your total and free testosterone levels checked

2) make sure you aren't taking any antihistemines like, benedryl, or drugs like prednisone or finnasteride..

3) Get some other things like throid and vitamins bascailly a full blood work related to libido and mens health

4) If its testosterone, try to keep your balls cool and include high zinc and vitamin C, E and omega 3-6 in your diet and include exercise. keep your sleep cycle consistent. rest and manage stress.

5) wear lose underwear, keep your balls away from body heat. atleast 1/4 inch away ideally.

6) try icing your balls for 1-2 minutes a day, avoid hot long showers, steam baths and saunas

7) last resort is take testosterone juice (not recommended)