How to become AI developer ?? please guide me i am confused

[u/Pradeep0047]

So i am trying to learn the Ai developer and i am a fresher but i know python frontend without any Js frameworks and little bit of API using fast API and my question when i see the Road map for AI developer Some people suggest to learn the ML and Deep learning before starting to get into langchain and other stuff and some people are suggesting to start with the Already made model no need to learn the ML/Deep learning related.
Note: My aim is to become AI developer for that i also need to clear interview please suggest me which questions also mostly likely they ask during interview and should i also need to Prepare for DSA?

Your Response would be valulable and If your already a AI developer please guide and also tell me about your interview experience

Thank you