Quitting after loosing is a sign that you are a looser.Remember gambling is for fun only just enjoy it and dont emotional and loosing all your asset it all happens.
Don't you think virtually everyone in the gambling space is bound to be a loser since the chances of losing is higher than winning anyway? However, what makes you a big loser is not to be in control of yourself and then allowing gambling to take over you completely.
In that case you are losing your money and you are losing yourself entirely to gambling which is even worse than losing the money itself because it would keep compelling you to lose more money without sitting to reflect on where you are getting things wrong.