CSGOCrash.com is a game of luck. This means that if you play in a strategy-oblivious way, you'll not do too bad. But with a good enough strategy, it's actually possible to make enormous profit.
Here's how it works:
Right off the bat, there's a 2% chance of the game instantly crashing. If this happens, no one can win anything. This means CSGOCrash.com has an expected return of
2% * playersInGame * tableAmount.
It scales between 0 and 2% see: odds and calculator. This is what you need to overcome!
Single Player Game
If you're playing a game, and no one else joins, it's not possible to overcome the house odds, and it becomes a simple game of luck.