What’s the biggest gambling loss you’ve ever had, and what mistake led to it?

[Player101]

I remember my loss, and actually it was very small compared to others (around 200 USD in one bet, compared to my initial budget it was a big amount that time). This helped me learn what can happen when I decide too quickly. The problem is, even years later, I still struggle sometimes because of emotional betting and even greed (but I control myself better now). What’s your biggest loss in gambling, and what caused it?