You don't actually need to quit trading just because if big losses instead take a break and cool your head off. Besides chasing losses is never been good, yes there's a possibility you can retrieve it back but most likely it will just make things worse so forget it. You lose part of your money forget, you will get it back eventually 2 fold or more without noticing. Emotions do matters when it comes to trading that is why you should learn to control them otherwise this will be a trigger to your loss. But if you think trading isn't for you then call it off and look for something you are good at, it is better to know your limitations after all.
"Chasing losses" is not bad on trading, it is not gambling. In trading you recover losses and best way to do it is to learn from your mistakes and make better decisions next time.
Actually chasing losses isn't the ideal trading technique anyone wanting to go far in the field should welcome. Hope you don't understand what it means to chase loses, I'm not speaking about you making a profit on other trade after you have lost in the previous but the idea if wanting to revenge your losses that's deadly.
If a particular trade isn't going well for you, you just have to understand that loss is a part of the game and move on to other trade with a fresh mindset and not with the mindset of wanting to make back your losses because that could affect your decision making and make you make the wrong moves that'll most likely cost you more funds.