Inexperienced kid trying to hack arcade games

Hey, so I’m a kid that goes to an arcade a lot and I’m just wondering how I would somehow get more credits on my card

I saw a similar post to the but the answer was unclear to me so I made my own

I’d post a picture but it won’t let me, so I posted a link to the site

Any help would be appreciated because they’re rates for games / credits are insane and I’m just a kid with very little cash