Dragon’s Lair
I grew up in that time frame. Normally people would swarm around the machine and give advice.
Arcades were very social when it came to certain games.
The same way you beat any game in the 1980s and early '90s: lots of pattern memorization based on trial and error. In the arcade, that means lots of quarters.
Once a game like Dragon’s Lair was memorized, you could play through the entire thing on only a couple quarters, to the astonishment of arcade bystanders.
Kids and teenagers had more time back then because smart phones and Instagram and YouTube didn’t exist. People underestimate what a huge time sink those can be.
No one had Internet access. You could play a game, play an instrument, read a book, go to the mall and the arcade and maybe catch a movie, go outside, or watch whatever happened to be on the 3-4 network TV channels (or possibly cable if your family had the money). And TV back then was mostly terrible.
So if you had $10 in your pocket, that was an entire afternoon of entertainment at the arcade and movie theater.