I'm not really in disagreement with you and there was a time when I felt the same way about how we should go about navigating certain games. But that was in 2014, and the defeat to Leicester City in Van Gaal's first season at the club, when we lost 5-3 after leading 3-1, made him go defensive. And I think that was a mistake, because we did alot of good in that game but the bad overshadowed the good over 90 minutes. And for me personally Van Gaal should've tried minimising the bad and encouraging the good stuff on the training ground but he instead decided to take the cautious route. And that for me contributed towards his downfall and created a environment where we were playing a brand of football that was low intensity from a bygone era.
Solskjaer went on record and said he wanted to replicate the high pressing football of Jurgen Klopp, but ended up taking the cautious route which got us a couple of top 4 finishes, but we didn't evolve as a team, get close to replicating the high pressing football of Jurgen Klopp or even compete for the league title in his 2/3 years at the club. And one game that epitomises my thoughts, is the game against Spurs in 2020, when we set out to impose ourselves on Spurs and they countered us and ended up scoring 6 goals. And Solskjaer in his post match interview, made it clear that wouldn't be happening again, and we again reverted to playing a cautious brand of football with the emphasis on defensive stability as a priority. That would change after the arrivals of Sancho, Varane and Ronaldo, where Solskjaer would again attempt to attempt to play a more expansive game but the wheels completely fell off and he lost his job. Three years of trying to 'play like Jurgen' and we didn't get close.
Under Mourinho we finished second one season but I do remember saying on the forum at the time about Liverpool looking the more dangerous team in the long-run due to their proactive approach towards the game. Whilst our reactive approach wasn't sustainable when up against the more proactive and adventurous minds in the league.
Jurgen Klopp at Liverpool stayed consistent with his ideals in his early days at Liverpool where his team suffered a number of heavy defeats whilst he was in trial and error mode. And he was going game by game and working towards creating a team that was going to fit with his ideals and vision in the mid to long-term. So when they lost 5-0 away to Man City, it didn't deter him from trying to improve upon the mistakes and trying the same again in the next game. That's how you evolve as a football team, and Arteta at Arsenal is another example of a young upcoming coach who after 3 years has implemented a dominant play style after many ups and downs.
I don't have a issue with anyone thinking we should've maybe played a extra DM and had Bruno on the bench against City. But my own opinion right now is to see us attempting to play a more proactive brand of football within reason, and taking each opponent relative to their strengths. I think we will learn much more if we carry on with such a approach against a Man City, who I was half expecting to beat us before the game started. And when you approach games on the front foot, the weaker players in the setup will stick out like a sore thumb, and that will hopefully enable ten Hag to quickly move players on.
It's about executing the plan and not running away and reverting to type because we lost one or two games imo. We have to look at the bigger picture and stay firm in our beliefs and evolve as a football club.