1- I don't think there is anyway to prevent that. Maybe if you're playing him in the wrong position, move him to the right one, or if he has 2 positions, try playing him at the other one. Otherwise just hope he plays better.

2- they could have used better tactics and countered your formation well, or the nordeus game engine decided to favor them that game. It doesn't happen too often.

3- no idea. It seems to be happening quite a bit recently though (hasn't happened to me yet)

4- the player you buy probably hasn't been playing much recently before being put on the market so his morale is bound to drop very low.. his condition wouldn't though. You seem to be exaggerating a bit here.. you don't always know that those things are gonna happen and they don't happen with most people.

5-well if we look at cristiano ronaldo, he's in his prime and he's not gonna get much better so it makes perfect sense with your logic. The younger players will get more training points usually and train faster than the older players, but don't expect any of your players to be getting more than 3 training points a game, or during training sessions. The players value goes down in the trade market as. They get older because as the player gets older, they train slower and gain less skill points. Makes perfect sense.

6-sorry I don't understand this question :/

7- price is usually based on age and training speed. The younger a player is, the faster he will train (usually) and the more valuable he is. So a fast training 4* 18 year old would be more valuable than a 5* 33 year old, as the 33 year old would train faarrr slower. Also makes sense. The academy I'm not sure how it works. Someone else will have to answer that question. I'm only in my second season and I don't buy tokens.