Yeah, I blacklist people quite liberally, as a disruptive player can quite often waste a lot of time in Diplos and also I keep a boot rate max of either 10-20% depending on the scenario.
You're not on my Blacklist, but the boot rate is way too high.
You could play a lot of lotteries, that will increse your game count. If you join 500 fast lotteries you should get down to under 20%, which would open up some of the open slots.
The best way is to join a Diplo clan and/or make friends with the Diplo creators (or just host your own? Your level is way high enough to host them...
np, don't forget you can run several at a time to get it done faster, just keep them in open tabs and remember to keep your sound on, the last thing you want is to get booted :P