Look after yourself seasidegirl, an obvious but one worth reminding ourselves at difficult times. Your GP may know of support groups.
Find a group doing something you enjoy, or fancy trying. I’m in a beginners water colour group, it’s very friendly and gives opportunities to make friends. Water colour is something I’ve never done but I’m enjoying meeting new people and trying something new. Is there anything you’d like to pick up again, or start new. It may not be aimed directly at support but might give some.
AlAnon and other groups for addicts do run groups for those affected by the addictions of a loved one. It’s absolutely draining. You can find AlAnon on line, if that isn’t for you, then they can probably help you find a service that is
Best x