I’m 4 months in and still can’t breathe.

I quit vaping and smoking about 4 months ago(started 6 years ago) and still have heavy shortness of breathe, air hunger, terrible cardiovascular endurance… I haven’t been able to cough up any phlegm. I used to vape everything including extremely burnt disposables, smoked non filters. I can’t go to the doctors to find out wheather or not I fucked up my lungs permanently. Anyone did worse to themselves and made a genuine full recovery of their lungs? I really think I messed up big time and im really depressed about it.