How to stop expecting from people when you’re constantly being disappointed by them?

I feel like I expect a lot from the people close to me, especially emotionally. I think I’m a person who does a lot for other people as well but I also tend to expect a lot. I like being the way I am, and doing stuff for others as it makes me happy and it is what makes me me. However, I’m tired of all this anxiety and hurt I encounter because I give my heart away too easily and expect things from others. I think the solution is to stay distant emotionally from everyone, but is it even a way to live? I am exhausted by always being the one who cares too much and appears to be too needy.