Find a hobby you're interested in if you don't have one already. Find a group in your area that meets up to discuss or engage in that hobby in person. Make friends with the people in that group by just existing around them and talking about your shared interest. Maybe one of those friendships turns into a relationship, maybe not.
Don't think of the people there as potential partners but as people you like spending time with and genuinely enjoy being around. If one of those friendships has mutual attraction and becomes a partnership, that's great! If not, you'll probably meet other people through them and maybe one of those will turn into a relationship.
Examples of hobbies for introverts that provide more structure for interaction and can have limited talking if needed:
- Boardgames / dueling card games like Netrunner / tabletop roleplaying games
- Pinball
- Video games fighting games or speed running communities are more widespread for in person events
- Book clubs
- Hiking, rolling skating, skateboarding, tennis, pickleball, basketball, soccer, bicycling, running, or swimming if you want to get some exercise