My parent's dont believe me

so basically, im not sure if i have social phobia/anxiety, but i do show some symptoms of it and have alot in common with people in this forum. so i want to go to a psychiatrist to get a diagnosis and to know if i do have it or not. but my parents are very skeptical about alot of things, including this. they know that i have a very low self-esteem and that i get nervous around people i dont know etc, but they don't want to send me to a psychiatrist. instead, they're sending me to a group talk (as the name suggest, you talk about your problems in a group), saying that i dont need a psychiatrist. a group talk is the very opposite of what i want . so i need help with trying to make my parents think differently. do you have the same parents like me? if yes, do you know how you made them think differently? i really dont want to go to a group talk