I tried one hearing aid for my left ear because that's where most of the ringing was coming from. It did very little. Once I tried a pair, my hearing was perfect, and the ringing almost entirely went away.
I didn't know my hearing was as bad as it was until I tried the hearing aids. If you do try them, make sure you try the pair and not just one hearing aid for one ear.
It may still help. You will know within 10 minutes of trying them on if it will help. When you walk outside, the hearing aids will pick up all of the sounds that you were missing.