Does FaceID improve over time? I switched to iPhone 11 recently and I find FaceID rather disappointing, it often analyzes my face several times before recognizing it and sometimes I have to type my code. I tried to reconfigure it and do it in different situations but it didn't change anything.

Does the technology improve when you use it, with a kind of learning machine? How do I get him to recognize my face better?
As the system is used, it learns about typical variations in a user's
  appearance, and will adjust its registered face data to match aging,
  facial hair growth, and other changes using the Neural Engine. The
  system will recognize a face wearing hats, scarves, glasses, many
  sunglasses,9 facial hair or makeup.10


https://en.wikipedia.org/wiki/Face_ID#Technology