Team , is business analyst or scrum master . Which is best . Also suggest online course platform to learn

I am ant to learn data analytics and business analyst online . Which platform is best for above courses ?

Can someone suggest the best course for sql I can take to strengthen my resume as a business analyst?

Wanted to know what do the Tech guys think of a Scrum Master? Did you have a better experience in reference to adoption of agile or was it just another non tech coordinator types role?

I am a business analyst, with 4 years of experience. I want to upskill in the same/overlapping domain. Please suggest any courses which I can take to advance in my career. Data science course is what I have in mind. Appreciate your guida...