As someone who does not play slots unless it's a daily quest, resulting in me almost always betting very little, I find the message "lost everything" to be kinda overdramatic and hyperbolic, especially when chat credits will make up for every time I bet with 1 credit several times over. A loss message that would be more appropriate for smaller bets as well as larger bets would sound better, like:
[PLAYER] used # credit(s) but didn't win anything.
[PLAYER] used # credit(s) and got nothing in return.
[PLAYER] used # credit(s) and got no credits back.
[PLAYER] used # credit(s) and lost them.