I'm going to say my uncle isn't rich
Why do you want to say he's not rich?
He's being so stingy about spending money and won't share any with me.
It's not good to talk about other people's finances.  You should get some tips from your uncle about finances. He might be able to help you become rich and teach you how valuable saving money is.
Oh you are right, I should save money
It's good that you can understand the importance of respecting others private matters like their finances. You will learn alot from your uncle and you will feel better when you make your own money with his help.