Maybe Manchester United's management still trusts Erik Ten Hag to coach Manchester United for one more season and he is doing this because many people think that frequently changing coaches will make the club continue to be left behind and so far Manchester United has always changed coaches, perhaps he wants to keep Erik Ten Hag to give him time to manage the club better next season, maybe with that opportunity Ten Hag can take advantage of that opportunity and build the club's trust in him again, as I said before, if Ten Hag can give him 1 FA Cup trophy, it's possible he will be in give it another chance.
In this case, of course, the management has a very big dilemma between firing or retaining ten hag as a coach, many considerations that may be the basis for retaining or replacing ten hag next season, as you said, of course a lot of experience has happened if the club is getting worse due to the change of coach that has happened too often so far, But we also can't deny that there are clubs that are actually starting to improve again after they change coaches, in this case I am personally more inclined to see the possibility of Manchester United rising if indeed they dare to take the decision to replace Ten Hag with another more experienced coach.
The FA trophy and carabao are ten hag biggest achievement during his time coaching Manchester United and I think with the star squad they have at the moment of course it's not a pretty proud achievement, so far we know that Manchester United is a team full of achievements and the club that won the most Premier League trophies at the moment, so it's quite surprising for us if they start to be proud and target the small trophy trophy as an achievement that is quite end-of-season success.