Why do i have so many problems? i have low t, sleep apnea, chronic anxiety, weird sensations i am only 18 and life is bad. no muscle because of low t?

Sounds like: Poor diet, the commonest cause of your symptoms. Sugar in the diet causes a corresponding deficiency of vitamin b that then affects the lower part of the brain to cause sleep apnea, anxiety and "weird sensations".

Low T Common in sleep apnea: Sleep apnea can occur at any age. Anyone with sleep apnea is at a considerably greater risk of developing low testosterone. Anxiety is extremely common. I don't know what type you have but anxiety itself can be caused by sleep apnea if it's untreated. 20% of people with depression for example have sleep apnea and it's been estimated that about 10% of children with adhd also have sleep apnea. Certain conditions in medicine simply cluster together.