Chasing losses.

Yes, best example to use is my wife, who burn 400k quid around 2018-2019 period.

How she kalah? Well, its like this.

Go gamble with 2k, win 3k, then lose 3k out, then balik. But in her heart, she kalah 3k liao. (Already assume the win money is hers, but never consider the fact her capital untouched)

2nd visit, bring 5k go, leave casino 6k in hand. So that's like menang 1k rite? But nope. The first visit kalah 2k not yet return.

3rd visit, bring 5k go again, this time win big, got 10k in hand, but then kalah back into the game, leave casino with 4k. (So that's kalah 6k to casino. Add with the 2k from 1st visit that she assume its her money already, means she total loss 8k to the casino. But she never considered that end of day, her capital no touch at all, still 5k end of day. This snowball continue, until 400k damage keluar pocket)