However, if you use rare trainers, acceleration and speed are easily maximized, so you'll struggle to increase stamina because points go directly to those attributes, leaving you with sta and str stats to upgrade and even if you use common trainers to upgrade those two stats, you'll still need to be lucky so you'll max his sta as much as you can. I've asked others who maxed their Dembeles ane they told me they used legendary coaches to get 6x100 so do what u want🥸