(If I had some sort of Isekai powers)
I would only pick fights with stronger battle-able men; rugby players, soccer hooligans, nightclub bouncers or MMA\boxing\muay thai competitors.
I would have first trained for years putting my life in the line to be a good street fighter.
Possibly Id deliberately do only "peaceful art" martial arts move suck as Aikido or Tai-Chi, as sort of political statement.