How are you supposed to find someone not looking for you but someone who wants the same things in life as you? make friends and get to know them and preferably in group settings. Your intention shouldn't be to make friends to find a wife, but to truly just be friends. Naturally, one of them might become your best friend.
After that, If they want the same things in life as you, it comes down to convincing them that it's a great idea to marry you. This problem can probably be its own Ask HN. Silver lining is if you fail to convince them, you probably still keep them as a good friend because reality might hit you that you may never establish a family, so the next best thing would be to fill your life with people you love and build a "family" that way.
IMO, overcoming the friend zone with your best friend is a better problem to have than just finding someone who will marry you and living the rest of your life with them because if you solve the former, you have a better chance of a happy life as opposed to your chances after solving the latter.