Why does my older brother hate me?

F(26), older brother M(32). And he hates my guts. Older brothers, if you hate your little sister, can you tell me why? Cause my brother won’t but he will belittle me every way he can. My parents won’t say anything to him and there’s no one to go to. When we do stand up to him, he pulls the suicidal card or keeps going till you block him. Then tells everyone I blocked him. I don’t know what to do anymore. Idk what I did wrong. Ever.
Growing up, I learned to just shut up and stay out of his way. In every way possible. I grew up knowing his hatred forwards me and still always tired to be the best I could to earn his respect but it’s just turned into jealousy (is what I’m picking up). Idk. It’s breaking my heart. My dad and little brother (21) are in the group chat and they haven’t said anything. I asked my mom to say something and to stick up for me and she just sent a thumbs up.
He’s the one that told me parents he wanted to talk to apologize and catch up. Just for him to talk to me like this. I only had him blocked for a day on my phone after he did this a month ago and he had me block on insta till yesterday. Idk what to do anymore.