Yes, you are a bad father.
I am sure your daughter needs a process to be able to know gambling, and you must be one of the parties who introduced it, whether you realize it or not.
You should be more careful, even though you are from a family that is used to gambling, it does not mean that your descendants should do the same thing.
It is better for you to continue to warn your daughter to start reducing or even stopping otherwise you will lose more.