Thank goodness there are such sharp observers as you. I mean, you missed the fact that this "10 second clip" was in super slow mo but I guess that was just hard to spot
And who can blame you, I mean it is obvious
you would never get that much time and space against an EPL team, let alone a top 6 club.
I watched an hour long interview with Szoboszlai not long ago after he signed for Liverpool. He himself said that in the Bundesliga, he always had twice as much time on the ball to make a decision, and a lot more space in front of him after receiving the ball.
It's not some myth that die-hard PL fans try to sell as the real thing, the players and managers are very aware of this as well.
In England, you will be closed down quickly and you won't have that much time on the ball to make a decision.
The clip you posted is from a game where Arsenal played like City usually does at Old Trafford, and they dominated us. They just made some mistakes and we had to be very clinical to win that game. Most teams in the league will not play such a high line at Old Trafford, because they know that even during this banter era of ours we've had deadly transition players like Bruno or Rashford. And Arsenal have very athletic defenders like Saliba, White or Gabriel who can play high up the pitch. White almost got back in time to stop this Rashford goal.
What I said doesn't make the Bundesliga a bad league, though, and Sancho could be a useful player for a side that is a well-drilled unit against low-blocks and knows how to unlock them. His link-up play is actually very good, but that's not enough to make it in the PL. Van de Beek also has really good link-up play in tight spaces, but he struggled even at Everton. I bet he will find way more success in Frankfurt.
I don't doubt that Sancho would look way better and actually be useful for City, Arsenal or Liverpool. Not as a guaranteed starter, though. More of an impact sub with some starts here and there. It's just that he could never replicate his BL numbers even at those clubs, because there are very few players in the PL putting up 30-40 G/A in the league and Sancho isn't someone of that mould who we've just ruined. He's just not a good fit currently and he's probably burned his bridges at United with his totally unnecessary hissy fit on social media.