Have you looked into seeing a neurologist? Also, looking into Physical Therapy is a good idea. They teach you techniques to compensate for your imbalance and the skills I learned when I was going to PT has continued to help me over the years.

I understand this. As soon as I went to the doctor with vertigo they sent me to an ENT and I've been to more ENTs than I can count, every time I see a new doctor it's, "well have you seen your ENT about it" 🙄 I also have mild tinnitus and had dealt with severe vertigo for 7 years now. They believe it's due to ocular migraines so that is always something to look into.

See a neurologist. You may have vestibular migraine like I do.