Whether they target specific managers is not really my main concern, although it can easily be programmed to set the odds for each and every manager separately.
Like I said earlier, it is like a slot machine and if you use hard instead of normal, it increases your chances of the "ïnjury jackpot"
You seem to be lucky, or as Nordeus would say: "unlucky", and have had minimal injuries. I had 7 injuries over the past couple of days, 3 in one game, 2 in another game and the other 2 from training. I train normal, always and I have close to 50 red packs. I refuse to use them.