It has not been many days since Guardiola sacrificed possession to instead be far more direct, and play more primitively against Arsenal. Why did he do that? Because he considered that it would give the greatest probability of victory, and partly because he had a player in Haaland who gave him the opportunity to do so. So I expect we'll see more of that from Manchester City against teams that are evenly matched - and there aren't many of them.
Here I think Guardiola is about to break with his principle of always sticking to plan a, and sees the need to be more flexible - especially if he wants to win the CL. Mostly, he can stick to plan a because his team is so incredibly much better than every other team. So really all he needs to think about is how to unlock teams that are in balance. Against more equal teams, they have often been severely punished in single matches with this approach.
So where am I going with this, well, there are always two teams on the field. You have your own team, and as Egil Roger Olsen said: "The tactics must be based on existing skills, and not what one could wish for", and secondly, you have the opposing team that you have to take into account. Should e.g. we tried to play the ball a lot through the midfield with Everton's current midfielders, and the defensive line which totally lacks speed against teams that are qualitatively much better, then 9 out of 10 cases it would have been a clear loss.
Then of course you have to think short-term and long-term, and right now the squad is not of very high quality. It also lacks confidence. So here we need a fairly simple strategy, where we minimize the risk, and the players feel that they are succeeding. In the long term, of course, this strategy must become more "complicated", and the degree of difficulty increased. But even then, the basics must be in place. In any case, now is not the time to embark on high-difficulty strategies. The players are like the rest of us, they need to experience success in order to gain self-confidence and motivation.