how is the career prospects and outlook for this job?
also how is it relatively to other engineering jobs (specifially CS, chemE, elecE)
if i gradaute in 2022 can i still get a job or do I need a MS?
in California how are jobs and how hard is to get one?
lastly, are materials engineers happy?
anyone ^^^^^^^^^^
Did you read these pages? Specifically the Job Outlook section and click the state and area data link and the similar occupations link. All your questions are answered here except the happiness question. But they do tell you about the work environment so can decide if you be happy in that environment.
https://www.bls.gov/ooh/architecture-and-engineering/materials-engineers.htm
https://www.bls.gov/ooh/life-physical-and-social-science/chemists-and-materials-scientists.htm
is there less demand tho for MSE than ChemE, MechE, elecE, bioE, other engineering stuff?