Post covid problem. Months. pls suggest.

I was covid positive in April 2021. My symptoms were both my ears were plugged and had breathing difficulty. My temp was 99 throughout and oxygen remained between 98-99. Pulse was higher most of the time. I was in home isolation and took necessary medications as prescribed. Post covid also my ears were blocked and my breathing problem continued. Got several tests done and all the reports were normal. HRCT showed no lung infection. ENT said there is no ear infection. CRP was 6.4. I felt chest tightness and congestion. Also had acidity post covid but that is fine now. My ears sometimes feel clear but then immediately gets blocked. I feel a lot of Cough lately in my throat chest n face. Doctors that I consulted so far said it's nothing but I don't get relief it's been 4.5 months. Pls suggest.