Amazon Software Development Engineer interview questions

Written test followed by two rounds of online technical interviews focused on Data Structures and Algorithms. Also focused on projects, logic building and computer science fundamentals that are DBMS, OS, CN.

I was in the stage of first technical round, I have answered the questions asked by the team and they had no further questions. I was under the impression that I did well but was not moved forward in the process and wasn't given any valid reason.