Covid can affect the urinary tract.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9233460/
https://www.forbes.com/sites/williamhaseltine/2022/12/05/symptomatic-covid-19-infection-is-associated-with-an-increased-risk-of-overactive-bladder-symptoms/?sh=3a32f96f7857
https://www.healio.com/news/primary-care/20210915/patients-with-covid19-develop-new-worsening-overactive-bladder-symptoms
You should definitely work with your doctor, perhaps a urologist.
Covid is a systemic infection, and long covid can affect any part of your body. My guess is that the brain fog and dizziness are part of that, though you'll want to rule out other causes.
I hope you feel better soon.