Does anyone else have a lack of clearance after nebulizing?

I have always had problems with clearing mucus after nebulizing and exercising and other tricks. Producing anything for a sample makes me anxious that whatever is in the tube will be rejected. I cough a lot in the morning, so I know it’s there. What I recently found out sometimes, not every day, I can produce a little of the greenish stuff around 1 pm-2pm after a gym session. So in the morning I get two puffs of levalbuterol, swallow mucinex 600 mg suggested brand Curist by somebody on this portal- extended release, then exercise with deep breaths( hands up with deep breath in,count 1,2,3, out hands down, few times, same with hands to the sides stretched few times) then do nebulizing 7% sodium chloride half alone with aeroclipse and half of the same vial with aeroclipse and aerobika together and a vest. In the meantime I stop and cough. I get rid of what comes, mostly saliva. But it’s what it is. I am dried out but even though then I try the postural drainage. If it’s without results I simply go with my day. But after 11 I go to a small gym at my local senior center and use the rowing machine 15 minutes and 30 minutes of treadmill. After I get home and drink a glass of warm gingery water I lay down on a yoga mat (it about 1-2 pm )with elevated hips and do the active cycle of breathing app-on my phone, 4-5 cycles. Usually I can produce may be about a teaspoon of mucus. I know so much effort for that but the whole process gives me hope that I might be lucky to get a sample for the culture to be tested. However if I miss the time frame of 1-2, I cannot cough up anything. In the evening whatever I try, nothing comes out so I do it anyway to move at least whatever is in my lungs. I am sorry it’s sooo long but may be someone will try this. It took over a year of trying different scenarios and this one seems to work sometimes. One more thing, when doing the app, when I start hearing gurgling in my throat, I know there will be something to huff cough. Sorry again for such a long post. Let me know if it helped. I took me almost a year of trying different scenarios to come to this small effect