What changed again

what is happening how is it i can play over a thousand matches in solo shuffle and only die to the same stuff i fight now 4 to 5 times total in all of those matches now it seems like even lower tier people can just melt my health bar i didn’t change anything but to higher gear and yet its easer for the same enemy types to just melt me now i can only assume it’s something blizzard changed and what was it so i can change to stop it and get good isn’t an answer.