Will a Trainer be available for this or is it considered an online game? I know it has some kind of online stuff but I think it’s mainly single player.
Welcome to the community. 
Games are added to the WeMod library automatically by the system for voting to have a trainer made, as long as they have a certain number of unique downloads from their stores.
At this moment in time, the game does appear to have a single-player mode. But until the game is actually released and tested by WeMod, we can’t be 100% certain that a trainer will be possible, the developers could change anything they wanted last minute - some single player games still require a constant internet connection. Which I hope isn’t the case for this game, we’ll have to wait and see.
i surely hope. taken in consideration i heard this game is amazing but my internet connection is very low and sometimes disappearing, that would be a big waste