Helping to much

So I feel like all my friends ignore me unless they feel like crap. I honestly have like two people I would die for and that’s my boyfriend and best friend. But I have like 5 other people that only talk to me when they feel depressed or need to talk about themselves. I don’t wanna be rude cuz a couple of them have tried to commit suicide and I don’t want them to die but I feel like when they talk to me I don’t know what to say. Half the time I think I’m just there to vent. Any ideas on what to do or thoughts on the matter.😕😕