In my opinion coaching is pretty much the most important aspect in football. Teach the players the right way and plan correctly=success
Rams last year, Rams this year. about the same personnel, way different results. That is coaching.
The patriots year in year out....players come and go, yet at the end of the season, in playoffs & a winning record..year after year after year. That is coaching the right way.
There are also QBs on both of those teams. Both teams look wildy different with Geno Smith at QB.