Where are all the Assassin’s Creed trainers?

So many great Creed games and so few trainers. What gives?

I count 19 Assassin’s Creed trainers available and 5 unavailable when I type in Assassin’s Creed in the search bar.
I don’t know how many games there are out there, but 19 seems more than “so few”.

I don’t get it. When I type Assassin’s Creed in the search bar only 7 games show and only two trainers are available. The other five games say unavailable.
Is that because I don’t have a pro account?

Is there a reason you are searching on the website and not in the app?

I had no idea the app was different from the website.