Your symptoms sound much like those I had in 2019. I suspect I had Covid in March 2019 (there were no tests at that time). About 3 months later, I was having a lot of buzzing in ears, pressure in ears and sinuses, vertigo and balance issues. You described it really well. I felt like I was being pulled or listing to one side. So weird! I started with a couple rounds of antibiotics that didn't really help. Also had unexplained tachycardia and CT, x-rays, echo and stress test were all fine. It took more than a year to start feeling myself. Things that helped were chiropractor, massage, targeted stretching, and supplements. Alpha Lipoic Acid and a good pre-biotic/pro-biotic for gut health plus B and D vitamins all helped. A whole food diet limiting sugar or sweeteners and getting a good night's sleep also makes a world of difference. I still have little issues now and then, but they are minor compared to how it all started! I wish you the very best and hope you have a quick recovery!