It seems you've focussed a lot on what having 'a wife' would bring to you.
What joys and delights would you bring to their life? And I don't mean financial security or stability or a holiday companion. (or a bit of DIY and cooking)
What are your passions? What make your eyes sparkle? What makes you feel energised, proud of yourself? What drives you to achieve something? You don;t have to be a hot-shot lawyer or a greative genius. Do you love to dance? Or try new foods? Try your hand at cretive writing? Or samba drumming?
Join a club or go to an evenng class because it's something that YOU would love to do, not to meet a wife. Throw yourself into something that excites you or stimulates you or that you enjoy learning. Volunteer for something that you genuinely belive in and where you will be valued for waht you offer. Through those kind of activities, you can expand your friendship / social network, and who knows where that can lead?
Personally I am attracted to people who are doing something they love and who thrive on their own joie-de-vivre. I'd be really put off by someone whose purpose in joining a social activity was to find a partner.
What is the rest of your social life like? Do your friends not have any single friends? Or why do they not introduce you? Can you expand your network, in general? Meeting more people as friends (men and women), explore how to build and develop meaningful friendships. Maybe one of them will deepen into love. Maybe you might decide together that being married is the right thing for you both.
Or maybe not. Maybe you appreciate the time you have spent together and what you brought to each others lives during that period.
You don't 'find a wife'. That makes it sound like a row of women waiting for you to come and choose one of them.