My question after watching this ridiculous match is, what kind of club is this? We really don't recognize Man United anymore. This doesn't feel like a Premier League club, whether it's Sesko fault, Onana, Amorim or even everyone at Man United. The bottom line is they're terrible, disorganized, and have lost everything. Looking at the players ratings after the match makes us realize that Man United isn't even worthy of playing in EFL League Two. 
If we are going to judge Manchester United as of now they are below any average team. Manchester United we knew back then are not followed by the same talents or even better talent then the old days, the club is moving from worse to worst every season. Officially Manchester United are out of the Carabao Cup , knowing that a league 2 division team knocked them out is a big disgrace on their reputation, from losing 2 goals down and recovering, still lost the penalty shoot out by one of the new signings. What are Manchester United doing? They can't win nothing this season, if they continue this way they won't see top 10 in the Premier League.
The journey to success starts with a step and so far they've taken a step this season, if they try to attend to all areas and the problem doesn't change maybe they can try change the coach but for now, I think Manchester United should give Amorim more time to try work on the squad and motivate them to do better.