trying to track info through the wild west Binance (Chinese) days

i don't know what to do about finding out my cost basis for the trx i want to sell now, almost a decade later. i started on binance before it was banned by the US, and i can't log onto my old account from the US to search for sell logs. even before, binance was terrible with logs, storing only up to a few months which won't help with 2017. i have a vague number about how much money i invested, but i'd rather not do guess work and have specific numbers.

it gets messier if i didn't buy trx with USD, but rather with BTC and ETH, both of which were WILDLY fluctuating not only in relation to each other, but even to their own prices in the span of 5 minutes. so how could i tell how much i spent to get that TRX, when i had bought it with ETH, which i had bought with BTC, when all three were swinging independently of another's prices? i wish i had just kept it simple with USD, but if i remember correctly, TRX was only available through BTC and ETH.

i do miss the crazy days of crypto swing trading though.