Kompany is yet to collect a point since taking the player-manager's job at Anderlecht.
"He's been a manager for like two months, so what do you expect?" said De Bruyne.
"To go there and win every game? It's not like this in football. I think there's a lot of people who want him to fail, because to do this job, to be player and a manager, some people don't like it but I know Vinny pretty well and he probably won't care what people say about it.
"I spoke with him a few times, he's enjoying it.
"The games that I saw I think they're playing really well, they're missing a striker for the moment but I think he had a very tough job."