I've lost track of a coin I bought. How do I trace it back?

I have a small amount of ADA that I bought on my first days on the app. Basically I had DOGE, sold it for BUSD, bought BNB and that's it. That's as far as I managed to trace it through the app. I basically have no Idea at what rate I bought the ADA at. I didn't bother looking at it since it's really a small amount and I've made far larger (and more educated) investments since and I focused on them.

I must be missing something.. I looked through every transaction/trade history I could find on the app and 3 hours later I still can't find anything.