I went out twice a week for over 20 years, to live music in small music clubs. Sat up front to take photos of the many musicians I became friendly with.. VERY often too loud.
I learned to make my own protection by simply tearing up tissues or paper napkins and pushing some in my ears, you get a sense of how much, and how dense or loose to fold and how loose or firmly to insert them. Sometimes only 1 ear, on the drummer’s side perhaps, would need a bit of protection.
Even if way in the back of a big concert hall, I still try to remember to grab some tissues, cocktail napkins from the bar, good old TP if unprepared will save the day.
Maintain audibility but avoid excess.