I'm upset at my mom for disregarding my mental health
How do you feel she's disregarding your mental health?
She's busy all the time working or with her boyfriend.
It is ok to want attention from your mom in a mental health crisis. But, if you cannot get support from her you should seek professional help.
I don't like the idea of therapy.
I understand that it can be scary, but going to therapy can be really beneficial. I think you should try it out before saying that you don't like it.