I just saw the attached pictures and I noticed that most of your players were 6 stars only after 2 or 3 years of training and tanking which means that you were not training hard as i suggested above


If you buy 95 % players and train your team HARD and let them gain 15 %- 20 % each season their power will become as shown below
1st season 110% or 115% - 18 years old
2nd season 125 or 130 % - 19 years old
3rd season 140 or 145 % - 20 years old
4rth season 155 or 160 % - 21 years old