If you have never played “fantasy sports” before or even seen a draft for team sports (NBA, NFL, MLB, NHL)…
What separates “Fantasy Sports” and, at that, “Fantasy MMA” from “pick em”, draftkings and other commonly marketed “MMA Games” is that no one is allowed to pick the same winner. If you think Israel Adesanya will beat Jared Cannonier and you “pick Israel”, NO ONE ELSE CAN PICK ISRAEL. This means everyone else will be forced to pick Cannonier or a different fight/fighter.
IN ADDITION, YOU WILL “KEEP” THAT FIGHTER FOR 1 YEAR or whatever length of time is determined. (So someone like Izzy or Volk might fight 3 times and win all 3, which is obviously better than someone that only fights once and wins). Fantasy Sports are completely flexible. You create the rule set and system you want to “play” with based on the real-life outcomes.