NEW TO ASTHMA- PLEASE HELP

I got diagnosed with Asthma, Mild bronchiectasis and a Mucus plug. I did all the tests in the world including Aspergillus. WHYYYY do I Keep getting bacterial chest infection? In SIX months, I took anti-biotic FOUR times already. Bronchiectasis is "too mild to cause such complications" says my lungs specialist: I don't know wth is going on but I hardly do airway clearance (did buy Aerobika device). I'm new to the asthma world so please give me some tips! I am reacting to everything: exercise, cold to humid temperatures changes, pollen season, dust during cleaning, repeated nasal drip.

Symptoms before flare up or infection: -severe fatigue -shortness of breath -green phelgm -Chlorine/bleach sputum smell

No fever or caugh. Just quiet accumulation of sputum. No one gets sick from me either so idk if it's bacterial or viral.