This is great! Good on you for putting together a plan and taking action.

One thing I noticed when I was doing salsa dancing is that there's a normal distribution for how you "click" with people. With salsa dancing, you change partners frequently so I may have interacted with dozens of people in one night of dancing. I noticed how most people fall in the middle of being fine to dance with and then you get a few outliers where they are either terrible to dance with or are amazing.

It looks like OP found something similar. Out of 35 encounters, he had 5-6 advance to the "prioritization" stage (~14%) and 2 (5%) ended up moving into building a relationship outside of the normal environment you usually interact at. I think that is very relatable. Most people you interact with will be fine to chat with but only a small percentage will be people that you really gel with.