Didn't read the whole thread but probably the main problem is that the market in unbalanced.
During the years I sold/bought players even at 10 millions, now the market is on a "recession" and the new players can easily buy every player on the TL. In addiction the value of 1m today is not the same that we had when in the TL the values of players were 5 or 10 times more.
Again and above all now with the exahustion rules coming, try to premiate managers training players.
1990-2022 Stalinorgel - https://www.youtube.com/watch?v=pV-Xppl6h8Et