What am I supposed to do?

(cw: pretty long)
hello everyone,
i'm new to 7cups, but it looked promising for help, so i think i'll try it out. the reason i'm posting today is the same as the reason in the title: i have no idea what i'm supposed to do.
for context, i'm currently 16, and i have a lot of problems with social anxiety and depression. i also have problems with avoiding school, as it is probably the biggest source of anxiety for me. this behavior got me put in an alternative school around the eighth grade, which i'm still currently attending. my parents know the reason why i got transferred, and they hold the whole situation against me, often at random. they get very upset that my home district hasn't transfered me back yet; but in the about 3-4 years i've been attending this school, they haven't once helped me try to get professional help.
i've been in a psych ward before, a little while before i got transferred, but that situation is never talked about (unless my parents want to use it to snap at me), and that, along with some state mandated therapy appointments (via dcfs), were the only times that i've seen a professional. and now, all of my problems seem to flaring up again as school starts.
i want help, because i know that when i get like this, it's a while before i can recalibrate. i can't do my work, find myself crying almost daily, end up either over or under eating, and dread getting up in the morning. right now, i have a counselor at school, and i do think she helps me, but i'm only scheduled to see her once a week for a relatively short 15-30 minutes, and i don't think that's something i can change. there's also things i'm not comfortable admitting at school, as i'm generally not comfortable with the environment. where do i go from here? i could try to schedule my own appointment through a clinic, but i'm not knowledgeable about the medical system, and over the phone therapy in my home wouldn't be the best option. i could also try and reason with my parents, but their track record of either ignoring me, outright denying that there's a problem at all, or bringing up religion (which is something that does not help at all, and almost always makes me worse), doesn't look promising.
i'm so lost and would greatly appreciate if anyone has any advice. i'm not sure how long i can keep shoving things down and carry on with school. thanks for reading, and sorry that this is so long.