I have never played any fantasy in my life my question is
is it betting ?
i have no idea how it works
I doubt it, fantasy has never been monetary on the actual dev side (unless it's a gambling site I suppose). In every sports fantasy league I've done any bets are done between the players (such as an entry pool, last place doing a punishment at the end of the season, etc)
Unless the plan is to have an "entry fee" where the funds go to the top X players at the end of the season, which is just the entry pool I described earlier but with extra steps