If you aim for self defense only go for street fighting (what the more elite soldiers learn, different countries different names for it)

Be always aware that Martial arts is formalized fighting where you assume that your opponent follows certain rules and certain moves are off limits and your average opponent upholds a code of conduct.

There are a lot of dirty tricks you do not get teached if the teacher is more traditional and does not aim at training you for such situations but aims more for the mental and self discipline/meditative side.

So it depends a lot on your teacher if your martial arts training prepares you for such situations.

Staged fights aim at winning the fight, bar brawlers aim to hurt you badly first and foremost, and you have to deal with people who may be drugged and or drunk, shrugging off very painful and powerful hits.