I had a brown belt in karate at one time and all those sparring sessions over the years only convinced me that martial arts skills aren’t going to save your butt in a real street fight. If anything, I learned to stay away from trouble because I was much more knowledgeable about the likely outcome.
So you did learn something. Keeping a clear head, being observant, and not letting adrenaline take over and cloud your judgement are some of the best lessons. Even in Krav Maga, which was made for street survival, the first and primary lesson is observation and avoiding dangerous situations in the first place.
But she always said, "If a big guy comes at me, I'm shootin' him."
I knew only one guy who really knew how to fight with martial arts, he used to bring me all the brown and black belts that he would run into and have them spar with me (I don't do martial arts) over and over what I heard from them after their systems fell apart within about 10 to 30 seconds were things like, "well, you aren't doing it right" or, in class we..., it seemed to me that they were taught to do Karate dancing, and to fight at arm and leg distance. Closing on them and taking them out instantly worked every time (except with my friend, he could truly fight under any conditions and he concentrated on dealing only fatal or disabling blows, he never 'danced' and paraded).
An ex-con with plenty of experience fighting in and out of prison once told me that the person most likely to win a fight is the person who is the meanest.