I say these two words are the same as never stop gambling.
chasing defeat and seeking closure are the same thing. in the end the gambler will lose continuously and get big wins that are not worth the loss after that the gambler will continue to bet increasing the bet amount to get back all his losses but that is something in vain and lose even more.
it will go on and on never finding closure and always chasing defeat.
Chasing losses before quitting is like you want to feel satisfied that you somehow get back what you have lost before completely stop your gambling habit. But we know chasing your losses can cause further losses since winning is uncertain. So it's not a good idea if you really want to stop playing and move on.
Anyway, it's not easy to quit if you can't accept your past losses because chasing it doesn't mean you're seeking for closure. if you want to stop, you can self exclude yourself, if you want closure then go to a place where you can't access on internet to gamble online and far from friends that can attract you to play in physical casino.