You can't. Apparently this is the new design. I've been reading for a month that they know it's a problem and are working on a fix. Starting to think that is a load of BS. I am also a level 56 and yesterday my first battle was an entire lineup of purples level 70 players. Never got to do much as hit a button before they killed my entire squad. That was the suicide squad. Did the same to every char I had. Didn't even manage to win the first one. Today is was gear level 8 5-6 star level 60s on my third match. So it's a catch 22. Need to gear/star/level your characters which sadly requires doing well in GW to gain the credits and shards which you can't do with current matchings. There is a huge number of complaints on here about it but I don't see any changes. Same with gear drops. Might be time for me to find a new game.
