How can my chronic bronchitis and tracheal inflammation be treated without steroid inhaler therapy? I'm afraid of going to polyclinics/hospitals as I'm afraid of acquiring COVID due to my condition putting me at an extremely high risk of getting infected.

If you have a sinus infection and bronchitis that has not gone away with antibiotics, you can see an ENT Specialist for an assessment and likely a nasoendoscopy (scope through the nose done in the clinic under local anaesthesia). If there is still infected mucous (mucopus) seen in your nose, a sample of the mucopus has to be taken and sent to the lab for analysis (bacterial culture). This is to determine the type of bacteria responsible for your sinus infection and the antibiotics that will be effective against that bacteria.

It can be quite common for a cough to persist for a while, after recovering from bronchitis. As for the next steps to take, you may want to check out these 2 similar questions that were previously answered by our colleagues here: How do I get rid of a persistent cough? What could be the cause of a persistent dry cough? What could be the cause of chronic cough at night and in early morning? How can I stop the cough? In most instances, your cough will gradually get better over time, with some of the symptomatic medication that your GPs would have prescribed.