Honestly, youre doing great. At the very early point in your career that you are at, it is normal and expected that you dont know much. The important thing is that you just keep learning.
There will always be people that are smarter than you. Perhaps even better at your job than you are (currently) in every way. Dont let it get to you; there's nothing wrong with not being the very best. There's also the old saying that "comparison is the theif of joy" (idk who said it, but it has truth). The hardest part is accepting it's ok not to know something; you can always learn it if it interests you.
There will always be people that are smarter than you. Perhaps even better at your job than you are (currently) in every way. Dont let it get to you; there's nothing wrong with not being the very best. There's also the old saying that "comparison is the theif of joy" (idk who said it, but it has truth). The hardest part is accepting it's ok not to know something; you can always learn it if it interests you.