I don’t know where to go for help

I’m a single mother of 3 and im mentally and physically exhausted. Last night my son wouldn’t stop crying and I was so tired. I got to the point of thinking over and over that I would rather die than to do this anymore. I’ve been crying out for help for months and still nobody will help. When my kids are at daycare I have to work. I seriously wanted to end my life last night. Then my parents don’t help me but they put more work on me. They never watch my kids for me but want me to do paperwork for them for their Buisness

I Just don’t know what to do anymore