Sounds like you are very similar to me and a billion or so other people. I don't see much point in creating a label for yourself in order to restrict yourself to that label. You are what you are and don't worry about it. I had a thing with a trans woman for a while and now I'm happily married with kids. Whatever I am has never had a negative affect on my life because I don't worry about what I am.
99.9% of people have more in common with an illegal immigrant than Elon Musk. Their problems aren't caused by people arriving in small boats, but those arriving in private jets.
Does this mean that blood type O will become rarer over time and eventually disappear? Does it also imply that someone, like me, who is O- has a family tree with fewer branches on it than most people?
Yes, a complete barbarian. We have them too, but we aspire to be better than just being equally barbaric in return. That's why civilisations do justice, not revenge.
Do what you can. Reduce your carbon footprint by eating less meat, using cars less, flying less. OK, by yourself it's not going to make a huge difference, but at least you will know that personally, you aren't making it worse. Join a group that is trying to make a positive difference.
Concentrate on the little things that make you happy. You can't stop climate change on your own but you can make something nice for dinner.
Value your friends and keep in touch with them. They probably feel pretty much the same as you do. Cheer each other up and support each other.
Make something nice for dinner, open a nice bottle of wine, leave the dishes until the morning, have a wank, and watch a favourite film on TV.