I feel very tired but can't sleep everytime I try to sleep I sweat like s**t and get angry when I can't sleep. I really feel f*****g sick of this games. Is it anxiety or illness?
Night/sleep sweats are one of the many anxiety related symptoms, so it could very well be that causing them! I've had them for the past couple months, sometimes even "nap sweats".
You might want to try something to help you sleep, I've been using melatonin and it seems to be helping me. Takes a little while to kick in, and also wears off after 6-7 hours, but it really helps getting to sleep! 
(Not a doctor or medical advice).
Where do you get it from I am in uk
Anywhere that sells supplements should have it. Holland & Barrett will for sure.