Till this time Ten Hag doesn't make a significant impact on the team, it suggests that his performance isn't up to good for MU. Exactly, it's not solely Ten Hag's responsibility, as there are 11 players on the field and a significant support staff behind the club that also influence the team. However, it seems like Ten Hag's strategies is the main reason here and might not be the best fit for a club as prominent as MU. The current playing style of Man United is notably very very poor, and its progress is sloooow.
MU is eyeing Carlo Ancelotti to replace Ten Hag, but it appears Carlo has turned down the offer for several reasons, even though his contract with Real Madrid is set to end this season. With only a few top coaches available, Man United's options for a replacement are narrowing. This situation seems likely to extend Man United's period of bad performance into the next season unless there are significant changes in the near future.
United's squad from back to forth are world class and I believe they just need the right hand. Let's use Onana as an instance, the major reason why he was signed by United was a result of his top notch performances with Ajax and now here's what they get. Is it out of the blue that Onana lost his capability to function well? No. I'm not saying it's the coach that made him the way he is but the coach can as well build him up to be better than how he is now. It's very much safe to say that a change of hand won't be bad for United.They need a new strategy, they also need a new managerial atmosphere, maybe that's where the jinx lies.