A question for girls

what is the right way to approach a girl for a relationship, not looking like a creep but then being assertive aswell to be just clear about your intentions. Like in an event or something how should you approach if you find someone attractive, last night at an event i saw a beautiful girl at an event and I approached her told her she was looking beautiful and her reaction was somewhat ok she was bushing her friends were chuckling but then I didn't know what to say so I well left cause I was also with the event team so had work there 🥲