I have added a banner for each of my seasons for my TV show, but while in the library I can not see different banners for each seasons and I can see only the default one (which I presume is fetched online)
Maybe change the name of your season folders to “Season 01” and “Season 02” and put a space between the “season” and the “01” and the the “season” and the “02” in the artwork names?
Infuse currently doesn’t support local trailers but there’s a suggestion thread you can add your support to by liking the first post in that thread. (note that thread is tagged as planned so it’s on the devs radar. )