Hi Richard, welcome! I have been doing counseling and a recovery group at a sex addiction recovery clinic in my city for almost 2 years now. Best decision I ever made. Including the decision to marry my wife - because it’s kept me married.
Sex addiction is (like you describe) a “rabbit hole”. It’s an endless run to… what? Who knows. But it’s empty, and it leaves us hollow.
There is an active recovery community fir sex addiction. There is SA, SLAA, and other groups - there’s a good list here of free groups you can join to get recovery support:
There’s also the books by Patrick Carnes on the subject (they’re meant to be worked through with a counsellor but are useful for reference and information even if you aren’t currently in counseling):
https://www.drpatrickcarnes.com/books-videos
Good for you for reaching out. That takes courage. Keep searching, join groups, find what you need - and you’ll find your path.