What we suggest you do if you want to win at the casino with little money is, not in any specific order:

1
Find games with a high RTP.
2
Play casino games with the best payouts.
3
Learn about the games you are playing.
4
Take advantage of bonuses.
5
Know when to walk away.
The truth is that there is no trick to slot machines. They provide random results based on set mechanics and it all comes down to luck. With that being said, not all games are the same, so picking the right options is key, and you can still change the size of the bet throughout the session for better results.