is it ok to be happy that certain people die or am I wrong to feel that kind of joy?
Not really something for anyone else to judge.
I have absolutely no idea why it's making you "happy." If it's even truly making you "happy," or you're just categorizing it as "happy." It could really be something more complex but you have no desire/ability to really pick it apart and figure out what it really is (or maybe you just didn't want to type it out here).
I mean a lot of people think they're "happy" when it's really just a reduction of stress/pain.
I can only really judge if you're the type that starts dwelling more and more in schadenfreude and after so long just feeling happy in the deaths of others you start doing things, behaving in ways, that create situations that are harmful to others because you want to feel "happy."
Creating those situations would be "wrong."
But whatever you're feeling, I have no real idea as to the actual "why" and I can't actually trust you to know. I don't know you. You're a stranger.
So whether or not it's "wrong" or "okay" for you to feel any certain way?
Not for me to judge. As an adult, that's for you to figure out for yourself. At best seek the guidance of real life peers that actually know you and have direct personal experience with your emotional states and what behavior it leads to over time.
I can judge the behavior of seeking out the opinions of random strangers on the internet, but that would be off topic. As to your "feelings?" Not for me to judge.