@arneyma AS @denzie said, we are not doctors, but I can tell you that "ground glass" is not a lung disease. It is an indication of a current or prior infection or lung inflammation. It simply means there is a "gray area" on the image.
Nodules, particularly small round ones (2mm is less than 1/10 inch) are usually not cancer, but indication of an infection.
Atelectasis is collapsed lung tissue from an infection or foreign body. Here is a description from Mayo:
https://www.mayoclinic.org/diseases-conditions/atelectasis/symptoms-causes/syc-20369684
All of this sounds like a description of "messy lungs" like may of us have here - the product of repeated infections, lifelong asthma or other lund inflammation.

With so many different things going on, you will probably be diagnosed with a chronic lung condition like bronchiectasis, atele)tasis or COPD. Make sure you are seeing a pulmonologist experienced in treating your specific condition.

PS Ground glass opacities and tiny nodules cannot be biopsies, but if the pulmonologist is concerned they will watch and probably repeat CT scans every year or 6 months.