System beats individual quality. The key is to find a system that takes advantage of our strengths and minimises our weakness. As it is we are just chucking "the best" players on the pitch in a "set" system that everyone is supposed to adapt to, and that doesn't really make a whole lot of sense to begin with. We aren’t as good as those who we want to compete with, but we have a wide variety of players who can play in many different systems, so we likely need to adapt our style to the opposition and what we have available at any given time.
Another thing to keep in mind is that the vast majority of our players are having the worst spells of their careers under Ten Hag at Man Utd. It's nothing new for players that join us to turn to shite, or be injured, or for us to be shite, but it's never been as bad as this. One thing is being shite and finishing top 6 for a season before bouncing back, another is being shite, playing like a lower table side and quickly becoming worse season by season.
I agree with bolded part, but I still think a collection of quality players can do something even in a not so good system, I remember Barca post Pep, they did not necessarily win a lot, but they were good enough to get somewhere, like a league title or CL semifinal, not their full potential obviously, but the collective were still quality (having players like Messi, Xavi, Iniesta, Bosquets, Alba, Suarez meant the team can do something, even with a below average coach), I know the Braca example I mention above is a bit extreme, but the idea itself remains, look at Liverpool, I am not saying Slot is bad or genius, but they do have a collection of quality players (Allison, TAA, VdV, Robertson, McAllister, Diaz, Salah) which means that they can still manage something even if their coach was not good enough.
I disagree on the quality of the squad. The defence is composed of a mix of very good players who play at a good level and have experience. The midfield is also made of a mix of very talented individuals and experienced pro who in the right setup can should be able to play well. The attack is the only part of this team where there is a relative lack of experience but in a system that gets the best out of them, you should expect their productivity to improve. This team is not Sure top 4 quality but it's no where worse than the squad of those teams currently battling for top 4-7 currently.
All we need now is a manager who can make them play better as a collective. When you do that, squad upgrades become easier because weaknesses become easier to spot.
Right now no player in this squad is playing at his level talk more of above it. Every player apart from Onana is underperforming (some would argue the coach hasn't even used Onana's ball playing ability as well as possible) and that's a systemic issue. I'll always use Newcastle as an example of how players look poor in a bad system. Newcastle were in relegation form when Howe took over. At the time many were surprised that he would take on such a job given his tactics and questions were asked if the Squad had the ability to play the kind of football Howe was known to favour. In less than 6 months and barely any major Changes to the starting 11 he had players like Willock and Wilson playing out of their skin.
I actually feel for some of our signings because I van imagine the shock someone like Zirkzee must be feeling coming from the structured system of Motta where his role as a false 9 was solid and clear to this mess of an attack where everybody is overthinking or Deligt being asked to defend acres of space and still have to watch his back in the paciest league in the world without any reasonable midfield protection.
I agree the forwards collective is the worst in the group, but our defenders make errors all the time, our midfielders are run through easily, the last 10 games can't only be Ten Hag's fault, the quality is actually lacking to begin with and the bolded in your post confirms what I think of this team, which is they aren't good enough to get top 4 as currently constructed.
The second bolded part for me means lack of quality as well, if a player cannot consistently perform to a decent level then said player isn't good enough, and if the whole team is underperforming, the reason again is lack of quality, not bad form, form is temporary and 10 games is not acceptable to be in a bad form.
and I agree with your premise that a system impacts players, I just think that on a fundamental level, quality alone still can get you something, even in a not so good system.
I think it's important to note that there's a difference between players playing in a system that doesn't suit them, and playing in a bad system that wouldn't suit anyone. We do the latter, which is basically setting the players up to fail and makes a lot of them look worse than they really are.
A system that does not suit the team vs a system that do not suit anyone are both equally bad for me, and will negatively impact any player, regardless of quality, but the level of the impact (of a bad system) would be, in my opinion, different based on the level of the player, team with a good number quality players should be able to perform to a certain level, not necessarily win a lot, but they wouldn't be routinely smashed, they will adapt to the tactics to some extent, average to low level players will suffer in a system that does not suit them.
Edit: I really want EtH gone asap, this is not me making excuses for him, good coaches can make use of what they have at their disposal and make it work somehow, a good coach with good players can get very far, even win things.