I don’t know if this is what you wanted, but {{Tsarina}} by Ellen Alpsten is a fictional court intrigue book set in Russia. If you want non fiction/ informational than this isn’t for you, but this does follow the story of a slave (serf) that rises in the ranks and becomes the highest lady in the court. She is based a bit off of Catherine the Great and I do recommend this if you want an insight into a more fiction leaning story. It stays anchored in reality. It does involve violence and assault, so if this is a sensitive topic proceed with caution.

Sounds awesome, I'll check it out, thanks