I am a 26 year old male. i feel and people tell me that my voice sounds gay. i wanted to know if taking testosterone supplements can deepen my voice? if not what can i do to deepen my voice or sound more masculine?

Don't take it: On your own, visit an ENT specialist for evaluation, who may refer you to a speech therapist, good luck

Agree with Dr. H: A speech therapist could help.

Dont automedicate: The use of testosterone is not innocuous. It have its secondary effects and risks (hypogonadism, infertility, metabolic changes, and many others). If you have a low testosterone level, an urologist could give you a supplement, but he will control your progress, telling you the risks and all the other changes that you could experiment with these treatment. I recommend you to see an urologist.