The downturn that befell Chelsea due to blunders made by team management, the decision to fire Tuchel was the beginning of Chelsea downfall. After the change of coach, Chelsea appearance did not improve, Potter, who was expected to improve Chelsea performance, failed to meet management expectations which made him the same fate as Tuchel. Chelsea was only able to finish 12th despite having good player material, when compared to the quality of other club squads, Chelsea is included in the list of teams with a luxurious squad after bringing in players at high prices. .
I still do not understand the reason why Thomas Tuchel was sacked in the first place because it seems to me that Todd Boehly made the decision to sack Tuchel based on emotions, I believe Todd Boehly was no longer fond of the coach and so he had to take him out.. I really hope he has learnt a thing or two from this unsuccessful season and do better in the next one.
I think Tod Boehly has learned from this past season alone that replacing a coach is very different than changing players. When you enter (purchase) a new club, you don't just fire the coach and some coaching staff right away without first trying to understand what has been going on at the club. Due to Tuchel's refusal to sign the players he wanted, he was fired. Chelsea was destroyed by his constant involvement in the decision-making of the squad without allowing those employed to do their duties well. Due to Tuchel's refusal to sign the players he wanted, he was fired.
With Pochettino leading the Chelsea club the following season, the team's performance will improve with the signing of new players and also the game strategy he will implement.