If you follow/watch/understand football, which I am sure you do, there will always be some component of chance, but most luck is created by the play on the field. BYU and 3rd and 30 to Collie is a little lucky, but honestly that is mostly skill and a blown coverage.
And injuries are expected in football. I don’t care if a team is down to their 100th backup RB, it just happens. I don’t hear the Pats complaining about injuries. An L is just an L, plain and simple.