It is not just "not the way you'd do them". You were promoted for doing your work better than others. Those others did not improve because you got promoted. So

It is not just "not the way you'd do them". You were promoted for doing your work better than others. Those others did not improve because you got promoted. So you have to figure out how to get useful work out of people who are doing things in a worse way. And let them do things that way even though you already know what's wrong with it.