Set 11: 900 Matches, 4.52/8, hardstuck emerald 3.
Set 10: 1200 Matches, 4.49/8, was hardstuck plat but got boosted to D4
So that's 2100 Matches, an average of around 4.5/8, still hardstuck emerald 4. That's 1.2k hours and still couldn't reach diamond.
For reference: I have never played autobattlers before, on my first ever set it took me 60 matches to hit d4, and next set only 200 matches to hit masters.
My friends all had very similar stats. Under 500 matches to hit high diamond/masters. I cannot comprehend getting hardstuck in plat/emerald for 1k+ hours. Genuine mental illness