The drills within a particular category aren't really ordered by difficulty, so unfortunately sometimes you'll get really hard ones early on and easier ones later. As far as I know there isn't a way to reorganize them or search by rating/difficulty.
Drills by Ranking
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I have been doing more drills and noticed that some of them are really hard (for context, I'm ~1000 Rapid). Does anyone have suggestions for drills by rank?