I want revenge on my uncle.
What has he done that you need to seek revenge on him?
He betrayed my trust and he has done quite a lot to humiliate me.
It is wrong to want revenge on people who have hurt you. It is ok to be upset, if you don't like them you should avoid  them and move on.
My uncle is so lucky. He is going to suffer soon and he will wish he never did what he did to me.
That is not a good thing to say. He is family and you shouldn't want to get revenge on them. If they did something wrong you should tell an authority figure instead of trying to do something about it yourself.