What to do about 4 year olds angry behaviour?

[dreva]

New to this but hoping for some advice to help with my 4 1/2 year old boy's behaviour .Keep thinking it will improve but it isn't at each day descends into a massive tantrum(him and me).He is bossy and grumpy and gets really annoyed if he doesn;t get his own way.Also lots of hitting to me,friends and even grandparents if he's cross.He doesn't get smacked. Have done time out but this descends into rage and him throwing things.Have removed rewards etc .Worried he will end up an angry boy with no friends.
Otherwise he is a nice boy honestly!

Hi, sorry you are having such a rough time. Does he get enough sleep? and does he eat well? My little girl used to be like that when she was tired or having trouble going to the loo. I also noticed she was like this if not getting enough attention. She really did play up if not enough attention. Hope this helped.