Speaking Fluently

These seem like rather active social media sites for Tibetan learners that might be helpful for you:

Reddit discussion channel (threaded messages that you can vote up and down) about learning Tibetan https://www.reddit.com/r/tibetanlanguage/ 

Discord channel (sort of a mini-facebook) about learning Tibetan where they also sometimes organize conversation sessions https://discord.gg/nGbgGk5KcB