Talk to General Physician on Constant Low Energy And Vocal Fatigue Problem

I go to the gym regularly and take a good, nutritious diet, but I am constantly struggling with a deep sense of internal weakness and low energy throughout the day. Along with this physical fatigue, I am facing a very specific issue where my voice feels weak, low, and suppressed, making it difficult for me to speak clearly or with full strength. Despite my active lifestyle and proper food intake, my body feels completely exhausted from the inside, and I am unable to maintain my stamina. Please evaluate these symptoms and guide me on what could be causing this internal weakness and vocal fatigue.