Steal everything that isn’t nailed down, blue on blue something expensive, take a ■■■■ in the shower and don’t bother closing the door when you leave. They aren’t your friends. They’re flesh banks.
If you are determined to stay, stick to your corp comms and chats, do things with the alliance sparingly (when you have to) and maybe learn to accept the situation.
Or leave. It sucks leaving a good corp with your friends in it but if logging on and having to deal with alliance damages your enjoyment of the game, you have to make a choice. I left a corp I loved because some things in the alliance were making me frustrated and I don’t play video games to feel frustrated.