I’m sorry this happened to you. I don’t think you were pathetic to beg, probably anyone as shocked as you were would do the same.
Hiring a lawyer and protecting your kids from an unhealthy environment with drug use will be something for you to approach in moving forward from this situation.
Try to keep yourself together as best you can right now. Today is Mother’s Day. Do something nice for yourself with your kids.
And welcome to the forum!