I had the same problem for years after Covid. After seeing multiple specialist, I was sent to an allergist to be tested for allergies because I constantly had sinus infections, ear infections, cough, mucus buildup, and loss of my voice or voice cracking.

As the allergist was performing his assessment before testing to see what I was allergic to, he noticed I was coughing alot and that I would loose my voice while talking. He referred me to a voice specialist who found out my constant cough had inflamed my vocal cords. She put my on medication to calm the inflammation which helped with the feeling of something stuck in my throat.

My allergist found a long list of items I am allergic to since Covid. I have been receiving the allergy shots which has helped with alot of the mucus. No more ear or sinus infections since shots started.

I also found out from an ENT that my Salivary Glands would swell and block my swallowing. I began consuming foods that made me mouth water, or mints that produce more saliva. My glands swelling has improved so I can eat more than soft foods.

Just some things that I have found in my 5 years of living with Long Covid that has helped. I am not saying this will work for everyone. I am just saying, listen to your body and find doctors who will listen to you and your symptoms.