Hey man I know where you're coming from because I was exactly where you are now back in 2019.
If you can afford it and if you're really ready to get your shit together and face your fears I can tell you from experience the best investment that I've made was to seek help from a psychologist. We've worked intensely for a year and it completely changed my life 180. I've come to understand why I was feeling ashamed and not worthy. I've come to understand my history, my family and most importantly my true self, including a lot of parts of my self that were inaccessible to me because part of my unconscious. Once these parts are revealed, the shame will go away, the feeling of not knowing who you are will go away, you will start to be able to feel compassion for yourself.
I'm not gonna lie, I'm still struggling today with anxious thoughts, but I'm on top of it now. Sometimes I'm thinking "hell man what the hell are you doing, what are you doing with your life". Everybody does though. These anxious thoughts will always be there. It's all about learning to change perspectives.
If you have 5 minutes I'd recommend you to read a bit about the concepts of False Self and True Self. From your brief message I can tell (from my own experience) that you are NOT who you think you are (you are identified with a False Self, someone you are not). Your True Self is hidden, you cannot see it now. But once you see it, you'll feel more "whole", "grounded" and "confident". That's exactly why you think you're trying to "be special when in reality you're just a fraud". You are not a fraud. It's just that you haven't connected with your True Self.
https://en.wikipedia.org/wiki/True_self_and_false_self#Characteristics
Again, I been there, I done that. It might sound crazy but it's grounded in science. The experience of discovering your True Self is quite something. It's difficult to describe, because your True Self has ALWAYS been, it's just that you're not connected to it. Right now it's as if you had been experiencing life through a black and white filter. Once connected to your real self, you'll see the full spectrum of colors.
If you can get assistance from a psychologist or a trained therapist I have great confidence you'll get better soon.