Lower your expectations of others. If anything, expect the best of yourself and yourself only. Do it yourself, if you want something; buy it yourself, if something's broken; fix it yourself, learn it yourself, if you want to eat something; find the f*cking recipe and cook it yourself, organize it yourself, make plans for yourself independently of others. You are not here to live up to the expectations of others.
Neither are they here to live up to your expectations.
You're not a princess, and nobody owes you anything. Toughen up and don't be scared of living your life alone, and so what if nobody will ever love you back as much as you love them.