For a team that is in a slump to be able to get a place in the top 4 of the standings is a good achievement in my opinion, especially this is Erik Ten Hag's first season in charge of Manchester United. With what they have shown this season, it is a belief that maybe they will continue in the next season or even be even better in the previous season. Erik Ten Hag has the potential to do just that.
So far He (ETH) has taken Man United in the right direction, won Man United the cup, brought Man United to the FA cup final, Europa quarter and 3rd place in the EPL league. This is an amazing feat for ETH in its first season. he really took Man United over that line. This man is different from Sir Alex and Man United's management needs to support him to build Man United stronger in the next season.
Overall, Ten Hag deserves to be praised. He took a big risk by coming to Man United. That second season was when he really started to apply his style. But if he doesn't have his new players in before pre-season it becomes much more difficult.