I think the Yorkie
can be calm, but a lot of effort in training is required.
The Yorkie puppy stage can be a nightmare for someone who isn't mentally prepared for it.
If you're looking for a dog with a perky, fun-loving, loyal personality, Yorkies are a wonderful breed. If you're looking for a calmer dog, you can consider adopting a Yorkie that's older than 2 years. Usually by then, they've settled down a bit and are calmer. Check your local Yorkie rescue organization and see what they have.