the highest lost that i've made as a gambler is 50$ , actually for me it's a big amount already so that was the biggest amount i lose in gambling and that time i was so frustrated but as days passed by i still go back to gamble.
Everyone has a different budget for gambling and as you said 50$ is big for you then only thing which I could recommend you is that going forward do not gamble or else only for fun when you have excess amount play with it and do not try to recover the lost amount as it could be the biggest mistake you could make it.