Streamers posting results from fifty buys are showing you noise, not information, since meaningful variance needs thousands of rounds to settle. Independent simulation runs occasionally circulate with proper sample sizes attached, and those are worth more attention. Where larger simulated datasets for common titles have been collected is mentioned on https://thebonusbuyslots.com along with the caveats. Even good data only describes long run behaviour, which has little to say about your next twenty purchases.