If someone followed my threads then you would know that my JW wife cheated on me and left me some months ago. So many gave me the advice to either leave or at least fade from the witnesses. But I feel way too lonely to do that. I am 36 years old now and meeting new people at this age is getting harder and harder.
The key thing for me is your statement that your wife left you a few months ago....... I would expect that it was and is a depressing and demeaning experience. So you may not be the most confident person right now.
I applaud you for dismissing the belief aspects of being a JW and knowing that you need the contacts and meet ups that a congregation or assembly can provide.
If I was in your shoes at this time I'd begin to move into some worldly circles. It is so much easier to get to meet people if you can duplicate what you have experienced........... Meeting with a group of people on a regular basis. People that you have something in common with. So I'd look at volunteering. Really good people are drawn to volunteering. Doesn't matter if it's one of the animal rescue shelters or the library. You can do some good in the volunteer world. And It feels good to give back to the community you live in.
My other piece of advice is look for JW's who are casual witnesses....very casual. The more casual the better. People...... men as well women ( you'll need some guy pals).....women who are also interested in the social aspect of the JW life style. A person who dates, doesn't go out in service very often, comes late to a meeting, looks and acts slightly bored. Dresses a bit more provocatively. Comes back from a vacation with a tan and talks about how great it was....... not about attending a meeting with the locals.
Find out early on if they can accept a non reaching out type of person like yourself. Even a person who isn't involved in field service. Then get to know that person really well before you make a commitment to marry.