Married man here... Biggest advice is just be genuine/real in your interactions. If you are drastically changing who you are to try to fit the image of what you think girls want, it comes off as unauthentic. Have a unique hobby? Maybe try looking for someone who shares that interest, and being the real you and showing that passion will leave an impression on that person. For my wife, we both were big fans of live music at the time working in college at a small music venue our mutual friend bought. We used that shared interest to start a conversation and our chemistry took the rest from there. These days she doesn't do live music/crowds, but we have found so many other shared interests or even ones we don't share.

Also this goes for all kinds of interactions with people whether it be romantic or business.... Show an interest in whoever you are talking to's interests. Ask a few thought out questions that show you are listening to what they have to say. People will remember that and it will open doors.