The cost in Vietnam is outrageously high.

This year, entering the Vietnamese market generally costs a lot, unless the product is exceptionally robust and backed by strong financial resources. Vietnam is an old BC market where the cost per acquisition is now high and retention rates are low.

Moreover, there are many scammers in Vietnam now, and I feel like they are Vietnamese-speaking Chinese, basically engaging in a battle of wits with them.

With high costs and a deteriorating environment, it's actually unbearable for most people.