Getting a divorce from a husband who is on drugs

Q: I have been married with nikah for 12 years. In the past 2 years my husband has joined bad friends and has lost his shop, car and all his money to casino and drugs. Nothing I do or say to him makes him change and leave the drugs and casino. From November he even stopped paying rent and
giving money for the house. I had to give notice and move out to a smaller place that I could afford. He is not even worried that I have left or where I am. I have given him enough time to change and come on the right path but he insists on gambling and drugs. I left him last month and have not seen or heard from him. I have sent him a message to give me talaaq but he does not reply. How can I go about getting the talaaq?

Semen coming out after urinating and making ghusal

Q: Can you please check if I have understood this properly: A man ejaculated during intercourse, he urinated and then did ghusl then more semen came out without desire, before taking 40 steps, urinating or sleeping will he require new ghusl? I read that he would not need new ghusl but this is what I was taught:

A man ejaculated during intercourse, he urinated and then did ghusl he took 40 steps, urinated or slept then more semen came out without desire. I was taught if it happens like this then no ghusl is required. Are both correct or not?

Semen coming out after ghusal

Q: In heavenly ornaments it says if a woman ejaculates and has ghusl and then more sexual fluid comes out of her she will require ghusl. Is this after 40 steps, urinating or sleeping - or does that just apply to men? Does the book mean if more comes out with desire? How is this understood?