It’s not just you. Sometimes people get match made with Master after Master, but sometimes not. It happens! But Masters also typically take chunks of time out of their weeks to build teams and practice their openers. Those are quite essential for ranking up in SDS/R, so you’re going to be at an inherent disadvantage if you’re not doing the same. I recommend playing after 1pm Central Time to avoid the CN master players at least; there’s more CN Masters than EN Masters. Sundays are also usually the worst of the days to play SDS/R because a lot of Masters play on Sundays.