I can't handle feeling this way. What should I do about how bad I feel bad for my little brother
Is he okay? What's making you feel bad for him?
No, he's not okay! My little brother passed away and I feel bad because he did to himself.
Oh, that's terrible!  I'm sorry that happened to him and I'm sorry for what you're going through.  It's perfectly normal to feel bad when bad things happen to loved ones.
I just miss him so much and I don't like how everyone is gossiping about him.
It's really normal that you're grieving over your brother, and feeling defensive about the gossip. Unfortunately people will always be rude and gossip. There's not much you can do, but try to avoid being around it.