hate how I feel

I don't know and care if someonr reads this I hope someone does I feel beyond alone like a black hole is eating out my heart. feel like I'm never doing anything right like if I would disappeared would it matter. if I would leave right not even my own daughter wouldn't even remember me. I'm alone with people around me makes no sense. I no longer feel like myself I look at myself in the mirror and I see a sad broken girl I don't recognize.