Solution: have a larger squad
Easier said than done, I know, but that's just what you need to do if you want a consistently high preview rating all season long.
I've had 8 major injuries this season, every single one to members of my first choice XI, as well as multiple 3-match suspensions for 11 yellow cards which are almost as frustrating. The only way I have been able to mitigate it is by having cover for every single position that's as good or close to as good as my first choice players. As such, my preview rating has fluctuated between its best level of 76 and a lowest of 72, which has been enough to have a moderately successful season.
Injuries and suspensions contributed to me leaving the game the first time- this time I have learned and I'm playing the game the way you have to play it. It's no good complaining about the rules of the game if you're not playing the game the way it's intended to be played.