When Todd sack a coach, he gives the impression that the coaches are the problem, but in reality it is not the coaches. This first started with Tomas Tuchel and many Chelsea fans were against Todd's decision. He repeated it with Pochettino and even many Chelsea fans didn't agree with his decision. However, when coaches are sacked, it is assumed that they didn't perform well and the coaches won't have anyway to defend themselves, unless for coaches like Mourinho who put clause of compensation in their contracts. We have nothing but to trust the management decision because they have the power to hire and fire, we are all spectators.
Whenever a team is failing while having many coaches in a couple of years then the fault is definitely not their or at least partially not their.
It is the same situation as Tottenham Hotspur and several other teams, they should focus on recruiting skillful players regardless of their age and names, basically following coaches need. Other than that they will keep turning in cercles..