I feel like a bother

Like the title says.
I feel like a bother, I feel like I'm also a terrible friend and a daughter.
I can't vent to my friends or even speak to them because I feel like they'll be annoyed.
Instead of getting better, everything is getting worse, I get severe headaches from all the crying and weeping.
I can't even force myself to call someone and ask why they continuously ignore me.
I keep deleting messages because I change my mind and decide that it will be better this way if I don't bother anyone.
I feel like isolating myself from everything and everyone, all I can do really is just vent on this website because I know that my friends won't even listen to me. And even if they will, I only feel like I ruin their mood and am a terrible person to be around.
I'm sad all the time, I wake up and feel like crying all the time.
I feel like a loner and I feel like my problems are too much for everyone.
I'm not english so sorry for any grammar or punctuation mistakes, I'm trying my best to make everything as coherent as possible.