Yes, buying players will not be a guarantee that the team will get good results because after all, in the last transfer window Chelsea also managed to buy players but in reality they needed adaptation to get good results. So, about Chelsea's success in buying players at this moment, it is just a quick transfer because basically Chelsea also has good finances. Therefore, it looks like it will be easy for Chelsea to get the players they want, moreover the price is still suitable and not too expensive like the previous rumors about signing Osimhen. But yes, in essence there is still no guarantee Chelsea will get good results next season just by getting players faster than other teams.
Chelsea wants to be like Real Madrid in the past, when a club brings in great players then their performance will increase significantly but unfortunately that didn't happen for Chelsea. Everything takes time between coaches and players especially in the Premier League competition and pressure can disrupt their concentration, Chelsea have failed for 2 seasons in building a squad and they want to repeat it next season, do you think Chelsea will succeed or make progress? in the first season with a new coach I wasn't too sure but in season 2 it might be possible.
Chelsea not only imitates Real Madrid in terms of recruiting players to improve their performance, there are many clubs that do the same thing if they want to make changes. Whether or not a club is able to build performance depends on the skills of the coach. So far, Real Madrid has been coached by great coaches with extraordinary skills, so it is only natural that the performance of its players can improve, in contrast to Chelsea, which seems to have difficulty building performance because it always changes coaches, even though it is an important factor. which has made Chelsea always fail in the last few seasons because the club has not given the coach much time to continue developing his potential.
In the first season of the new coach, I'm not sure he can immediately have a positive impact. I think it takes 1 season for the coach to study the problems at the club so he can fix them.