Somebody could explain why it won six Oscars?

Rating: 3/10 (4 June 2017)

Fortunately I have got this DVD as a gift from a family member and I didn't spent one cent for this boring musical. I waited with my wife thirty minutes and still didn't happen something really interesting. There is no substantial story or any suspense.
I am asking how if is possible that this one got six Oscars. Thrown away instead of giving these to better films that have been done last year. I cannot believe it but it confirms that I am right to not watch the Oscar shows. It is not the first time that a boring movie got so many Oscars and I am not wondering. I highly recommend it if you cannot sleep because I assure you that after some minutes you are falling asleep. 3/10