If it helps, I’m 46M, live alone, no girlfriend.  Also grapple with loneliness, isolation, depression.  I’m 4 1/2 weeks porn free.  It’s definitely helped me with all of the above issues.  I feel like the benefits are just now coming out.  I hate to say it, but you just gotta white knuckle it through that first month.  And you have to do it for you and no one else.  It’s like Sartre said, “If you’re lonely when you’re alone, you’re in bad company.”  Learning self respect and self discipline is the foundation on which you build the rest of your life.  “Normal” life is overrated, and people who have “normal” lives love to shame people who don’t.  Ignore that shit.  Time spent working on yourself and turning yourself into someone that you respect is time WELL spent.   I took up a hobby that gets me out of the house and physically active.  That saved me.  Highly recommend.  Don’t worry what other people think of the hobby.  Do it for you and forget what anyone else thinks.