I don’t know how to tell anyone

So I am 14 and I’ve had anxiety and depression since a child like age 7-8 and my parents know about it but they don’t know how badly I struggle with it and the thing is like they know about it but it’s not like they arent doing anything about it and I don’t know how to tell them like I need therapy or I need meds like I need someone to talk to because it’s ruining my day to day life. Some days I can even get out of bed, I wake up crying or I have panic attacks that last for hours and I get terrible headaches. I need help but i feel like if I ask or tell anyone they won’t believe me... how do I tell them or what do I say?