In general, Poccetino will have a lot of work, but he knows how to work, he has character and he will manipulate himself, so maybe he will get something good this season, at least to return to the top five teams in the league, it will already be a success.
One of the problems that occurs is that managers are constantly changing. Remember they are managed by three different managers in one season so that the balance of the team is ruined. The selection of managers is also very poor, they don't seem to have better criteria. They seemed to be in a hurry. Another view is that they don't have a great No. 9 striker. Kai Havertz appeared unstable, Aubameyang was also rarely trusted by coaches. Let's wait for this season's transfer what Pochettino will do. Of course they have a lot of money ready to be used for shopping.
More important than selecting good players is selecting good managers. Because when you can pick a good quality manager then that manager can pick good quality players in your team. A manager plays an important role in winning or losing a match. A manager decides how to play in any position or which player is doing well in which position or which player can be played as a substitute for any player. If you change multiple managers in one season, it is very difficult for a team to succeed as multiple managers will try to manage the team in multiple ways. So first a skilled manager should be selected and then attention should be paid to their own team then only then a team can achieve success.