Ratio of Ace to Glue

I've discussed a similar thing in a previous post, but I have a different question here.

Lately, my ace runs have worsened. My last decent "ace" is an S-rank Pasa around ~2-3 weeks ago (maybe). I noticed this situation is mostly because Kitasan & Sweep decided it's funny to not appear on speed during summer, and even most of the year. So, I had difficulties maxing speed out even with characters who have 20% speed growth.

This got me curious.

How many glue runs do you typically have before hitting a high roll ace run? Like maybe 10 runs? 20 runs? 30 runs?

Honestly, because of this, I can't wait for MANT/Trackblazer to come out. I'm pretty sick of unity already. If not for the event, I'd probably just do the dailies until MANT comes out. When will MANT come out anyway?

Before anyone address it, yes, I know, low roll runs are just normal RNG. Yes, I also know that MANT has its own RNG. No need to point it out. It's not what I'm asking.