1.Iam a fresher(Bsc cs) from 2019 passout I've want to be a developer I'm alread in a coding bootcamp of full stack developer so that i can have the knowledge...Is that startups are good or any Service based company or product based company? which way i choose even im so much confused on which frameworks to workon to like springboot for java or MEAN stack
so much confusions.... any suggestion Hope it help me alot :)

2.which side would be useful for the constant growth?
Im pretty much intrest in DS and ALGO now..it is worth to learn for better understanding while making a full stack application???