What is the best advice for a cowboy coder interviewing for a senior position

i’ve code my whole lot, it’s one of my few talents where it comes a lot easier than most things i do. i’ve been told my whole life i was gifted, i shrugged it off thinking it was just flattery, later on in life decided to talk to other more experienced devs, i was shocked that i was not only able to keep up but confuse them with things that i thought was how every coder was able to do. i have somewhat low self worth because of being raised in extreme poverty and having little to no guidance when it came to career advice. i am able to understand code, even if i haven’t read a document on it after like a week of studying and tinkering around with things, i assume this is somewhat normal, my question is, how can i get past the whole intimidation during an interview, i know i can give them what they want but, i feel somewhat unorthodox, i don’t think it’s an issue all the time but i am def not 100% tech bro, any advice would be helpful. thanks!