AI does a worse job of picking match day squad, starts injured players (see pic)

The picture doesn't seem to have been attached, try to post it here instead

 

Amrabat is the player who is "orange injured". Not very visibly obvious, but you can spot the edges of his "orange injury" if you look at ham. He is at DM / Deep Lying Playmaker on Defend duty in the selected players for the upcoming U21's match (he is not in my first team squad, have demoted him to the U21's because he isn't particualarly good, but that's another matter).

 

Added note: AI also now, on FM24 picks a worse match day squad for the youth/reserve teams when it comes to this: They don't rotate as well as in earlier versions. AI keeps starting the same players although they are not on full condition. And, unlike earlier versions, they don't prefer players with low match sharpness in order to get/keep everybody reasonably sharp.

This also needs to be adressed. Get the AI match day squad picking back to the sensible, rotating style that it always had on earlier versions (when it comes to the youth/reserve teams).

The icons for player information stack and if you mouse over they should expand out.

Like they do here: 

An orange injury, in many instances, isn't a concrete reason not to select a player. It's a risk, but the reason the orange indicator is there is to let you know that individual can play but they are not yet fully recovered. 

To investigate further we'd probably need a save game file. While I don't doubt what you're explaining in the particular screenshot you've go 5 players with no appearances and the most anyone else has is 3 appearances. By November that doesn't seem too excessive. If you'd like to share your save with us a guide on how to do so is available here: https://community.sigames.com/bugtracker/instructions-and-notes/how-to-upload-files-to-us-r98/