I can provide tournament data analysis (card usage, winrates, trends, matchups), but not strategic sideboard guides — that's outside my scope as a data tool.
Here's what I can do for you around Esper Goryo's in Modern:
Want me to pull any of that data? For example, I could show you the most common sideboard cards in Esper Goryo right now, which combined with the matchup data gives you a solid empirical foundation to build your sideboard plan.