Game types vs challenges

i don’t care what anyone says i think the game types and challenges are somehow connected. i said this when the game first launched and everyone said it was just a gamblers fallacy. it just seems there is no way that can get so many oddball/strongholds matches (even consecutively) when i don’t have challenges to complete but the moment need one for a challenge can play 20+ matches without getting one! it just seems like another game setting thats meant to get you to spend money on challenge swaps.