I completely understand your hearing issues. I’m seeing an otolaryngologist at UTSW, a huge hospital in Dallas Tx. You are right about going to places that sell hearing aids. UTSW suggested a place that sells the hearing aids he thought would work the best. I ended up with Phonak crossover until i lost both them during Covid when I removed my mask. My right side hearing is gone and I bought cheap aids on the internet until i felt comfortable and had the money to buy again.
It sounds like your sids need to be adjusted for the levels of sound you have lost.
I ended up at Costco after much research. They will adjust your aids free whenever your hearing changes and you can go to any Costco for service. They have a large range of aids and they suggest but do not press you to buy. I choose a molded in the ear and I’m much happier. I have auto immune Ear Disorder.
Google and research large teaching hospitals with Otolaryngologist. If you don't like the Doctor find someone else. Has the ent tried a medrol dose pack? Steroids?
Good luck on your journey.