I have never tried online battles until today! But for some reason I was put into the masters group with players with far superior monsters to mine. They had monsters I’ve never seen in the game because I was mainly a story mode player. How can I get myself into an easier bracket

if I recall correctly, there’s only one league now. Maybe due to lower amounts of players? 

Also, wrong section.

I recommend to just keep searching because every once and a while I find low players so I know they’re out there. Also, try and do online missions to get stronger so you won’t have to worry about being weak. If oms are too hard, you can always grind for levels at the bitefish spot below deucalis.