Should I be friends with these people? are these people even my friends?

I have two friends Richie and Keith we have our good times when we laugh and they cheer me up sometimes but sometimes I feel like they don't try to understand me or don't care and one of them is always negative cause he's depressed and the other one I feel like is overall just using me but sometimes I feel like they are trying to be my friend by cheering me up and stuff but sometimes they don't listen to me when I need advice and sometimes they even insult me and make me feel like **** but sometimes they can be good friends please help should i still be friends with them