only play with small amounts and if you lose at least you had fun don't play with anything that would be problem if you lose
Yes, one shouldn't have any target to win specific % need to win money from gambling on a given day. If any one chase winning in gambling than most likely they will end up losing lot of money because lucky is very important factor needed to win money in gambling. There no safe ways to gamble but you can play with small amounts to reduce your risks of losing more money.