No women at the gym? OK it sounds obvious but you just need to get involved with things where there is female participation and not just dudes. Pottery, book clubs, hiking/biking groups, cooking groups, dance lessons, various volunteer groups, even church, etc. But it has to be stuff you're genuinely interested in regardless. Nothing will come off worse than a new guy who's clearly there just to meet women (although, women sometimes join groups to meet men also).

Let me also add, I'm a good 20 years older than you. Don't get too wired into a vision of "family" because if and when it does happen, it might not work out the way you imagine. It sure didn't for me.

Focus on being content and happy with yourself, and then worry about meeting someone.