That sucks, and I’m sorry. In my situation, it turned out that addiction was a symptom of the narcissistic sociopath, rather than the explanation for the behavior.
You need to protect yourself. First, make sure that you have savings that your spouse cannot access and research what other steps you can take to protect yourself financially.
Then you have to consider what you want/need to do to help your spouse and preserve your marriage. Finally, addictive behavior often overlaps with abusive behavior. As much as we hear that you should stick out your marriage no matter what, it is ok to remove yourself from a toxic situation.

Like any addiction, it can only change when they are ready to give it up. Getting rid of internet devices and moving away from enablers may help.