Substitutes

[Castreal]

Only happens when I sub my defender. It happens. So I avoid subbing defenders.

If I need to change the game, I sub around 65th min. If I jst need to get a green pack, I'll jst sub 80th

Thats what I do as well, changing formation, sub around 60+ minutes, green packs near 80 minutes (else he might not get sub).
Only just this season, I start to notice that whenever a sub is made (without changing formation) immediately, there will be an attemp to score (within the same minute the sub is made) either by your team or by the opponent. What I do (usually when winning), is when I made the Sub, I change it to defensive mentality, just in case an attack is coming. So far conceded only 1 goal using this method, other times my defenders were doing their job right.

In addition I never sub a defender, just the midfielder or striker thats not performing, unless that defender has a yellow card, and is getting a lot of fouls with warning.