Is it normal for someone my age to be tired literally all the time ? only time i feel completely awake and alert is when anxiety/adrenaline at work

See your PCP: No its not normal. Go see your doctor. They will ask more questions about your diet, other medications even herbal supplements you have been on, your history as a child even your sexual history. Also important to note other signs and symptoms, including sleep issues

Not normal: Its not normal for a 20 year-old male to feel tired all the time. This is the prime of your life. You should be awake, alert and energetic. Finding the cause is important. There are many possible causes such as lack of exercise, depression or a medical condition such as infectious mononucliosis. Best to see your Doc and find out. Best wishes!