There is a reason the local gun club rule is, if you have no eye or ear protection, you stay off the firing range.
Summer of 1961 age 13 I got a bad case of permanent tinnitus in my right ear shooting a .22 pistol outdoors apparently with water in my ear from swimming or with blocked sinus or probably both contributed to it.
One bad ear, but I had a good ear left and made a point of using hearing protection when shooting.
August 1992 age 44 I had a car wreck with basal, temporal and orbital skull fractures and developed worse tinnitus in the left ear.
My bad right ear became my better ear. Both have rung continuously since then.
I use ear plugs at the range, plus muffs when shooting. Also I use muffs when doing any activities that I know will worsen the ringing: shooting, lawn mowing, weedeating, vacuuming, Fun Fest concerts, Bristol Motor Speedway, Blue Angels air shows.
Twenty years ago I could not hear the high organ notes in the intro to "Inagaddadavida"; recently I just started hearing them again.
People say if their ears rang constantly it would drive them crazy.
People who know me say that would be a very short trip for me.
I like to paraphrase Nietzsche, bad experiences that don't kill me make me stronger, and smarter if I learn from them.