Do they speak Russian in Bali?

If the question is about the locals, then no. Russian is not widespread here; most of the service staff in tourism do not speak Russian, even at the most basic phrase level. However, almost all locals communicate decently in English, with rare exceptions.

Where is best to go in Bali?
Do I need a category "A" license to rent a motorbike?
Can I exchange rubles?
Follow the link, all these questions are discussed in the chat - https://t.me/bali_travel_chat