@doberdoo I am sorry to hear your experience with the doctors in terms of what they have said to you and want you to believe.
You will be able to learn from all that is posted here on Mayo. Most of all I would think it important that whatever you start new at that you go slow and build up, especially with exercise, light exercise to start if you are not doing that now. Walking and then walking with carrying light weights might be something to think about.
The Active Cycle Breathing Method, Postural Drainage and Autogenic Breathing Exercise , Huff Coughing etc. There is information and video's on the internet for all to help you, us, in working to clear the mucus out of our lungs. Most pulmonologists who specialize in treating BE, Bronchiectasis, patients recommend nebulizing.
The routine of what we have to do for our Bronchiectasis takes time to learn and hopefully perfect. Eventually it becomes easier and less time after understanding it all. We also learn about what is best for ourselves as we go along, in the big picture, because we are all different in multiple aspects and ways.
Hope you are feeling a little better, emotionally, with seeing the posts here on Mayo. Wishing you the energy and strength you need to work through all of this. Take it slow, one step at a time.
Barbara