With crash gambling, you bank on a multiplier target, such as 1.5 x or 2x

https://crash-cs-go-skinswzbf030.tearosediner.net/why-you-should-be-working-on-this-cs2-crash-sites

With crash gambling, you bank on a multiplier target, such as 1.5 x or 2x. If the multiplier never reaches your chosen point, your bet is lost; if it does, you can take earnings.