Basically, choosing Lampard after terminating Potter also didn't have any impact I think because indeed they only exacerbated the loss of their finances and indeed it's proven in some of Lampard's appearances now because in the few games he has run, he can't make anything and even Chelsea are still have to lose points again and again.
As I said earlier in Tuchel and Bayern case, do not expect much from a newly appointed coach. He can't and don't have the time to make the team better unless the team itself is very good and stable, in this case why would they change their manager in the first place.
Now ten Hag for example started badly the season, then ManU completely transformed and lately things aren't going very well. The only competition remained for them is FA Cup, and a place for UCL next season.. Will he remains in ManU management? Maguire will be kicked from the team any time soon?