You are missing a big group of people who still doesn’t know how to make sense of the metrics.
Your UX is much better than something like Athlytic but to an average person you are still fuzzy with your value prop.
A short onbording video on what different metrics means would greatly improve adoption as users only understand the high level and miss the context. I am a tech product marketer and literally gave up on the app, until I painfully took half an hour to actually understand and get wow’ed by Bevel.
It should not be that hard.