It seems there are several problems that make Chelsea performance so poor. First, the transition to change ownership to Todd Boehly has changed the club principles. Even though Boehly is not stingy with money, maybe even a little more profligate than Roman Abramovich, his ideas are different and his philosophy is different. Second, Chelsea is bringing in too many young players. As a measure of competency in the Premier League, clubs need experienced players to be able to perform optimally and be able to compete to win the title. Third, the absence of veteran players at the club makes it difficult for young players to find role models. From a technical perspective, they also don't understand each other. However, if you look at the individual quality of Chelsea young players, they are not that bad. However, the chemistry has not yet been achieved.
It could be that the process of transferring ownership is an obstacle that means Chelsea is still not getting satisfactory results and I also see Chelsea's weakness in recruiting players because they don't buy according to the club's needs. So even though these players were bought at quite expensive prices, they were not able to help Chelsea's performance improve. There are no bad or low-quality players, there are only coaches who are unable to see the potential of the players they have because if they played at another club they could actually develop well.
Pochettino has lost his ability to coach and there seems to be a problem within the Chelsea squad, so that currently they have only collected one win from the total matches Chelsea have played. If Pochettino does not get out of the difficult situation he is currently in, it is very likely that he will be fired in the middle of the season.