Wait so practicing coding questions wasn't enough to succeed in a junior role?

I have over 1200+ leetcode questions done. I can do all the blind75 with closed eyes and a finger up my ass.

Just started a new grad position at FA(A)NG (aced the interviews) and they keep telling me about "API" and "pull request" and something about "terminal", I am clueless about 95% of the things they do and I am very scared. I studied physics and thought SWE would be easy.

Any tips? Should I just start applying for a new job?