It’s not like there’s any great mystery how to get male attention, and how to get guys to want to go out with you. But what if we restrict the question to exclude ways of dressing, speaking, behaving, etc. that the majority of society (certainly not all) has decreed are contrary to self-respect, contrary to morality, or contrary to God’s will?
That restriction makes it a bit more challenging to be noticed, but at the same time it might well get more of the type of male attention that you want. A decrease in quantity, but a possible increase in quality, in other words.
From there, probably the best advice is not to look for some “trick,” indeed not to intentionally, strategically, choose means to the end of being asked out at all, but instead to pursue other worthwhile ends that will, as a byproduct, result in your being asked out.
That is, develop in a positive direction as a human being, and let the rest take care of itself. Pursue the hobbies you genuinely enjoy, become educated in the areas you are genuinely interested in, pursue a career that you genuinely want to pursue, develop and live by the values that genuinely speak to your heart. As opposed to “I hate football, but I’ll pretend to take an interest in it so guys will like me because they sure seem to like football,” or “I’ll choose this major [career, church, etc.], because they say there are a lot more males than females in it, and that’ll improve my odds.”
Besides developing yourself as a person in ways you genuinely believe in, the more you are interacting with people, the better. If you enjoy watching reality TV shows alone, or you enjoy reading the works of ancient Hindu scholars in the original Sanskrit and meditating about their meaning by yourself, that’s fine, but you also need some interests that get you out in the world.
That doesn’t have to mean hanging out at bars. It could just as easily mean taking a class, doing volunteer work, or going to a concert. The more you’re around people, especially if you’re doing something you have a sincere interest in, and the same is true of the people you’re interacting with, the more likely it is you’ll make a worthwhile connection.
And it doesn’t even have to be eligible males you’re interacting with. Let’s say you enjoy working with elderly people, so you take a part time job at a facility for the elderly. When you make friends there with residents or staff, they have sons, grandsons, friends, etc., and ultimately it may be those secondary and tertiary connections who ask you out.
It sounds trite, but really it boils down to “just get out there.” If you’re an active, confident, happy, emotionally evolved person, and you’re out amongst people doing things that engage you and give you energy and show the person you really are, you’ll draw people to you. You may not be asked out by your ideal guy on Day One, but you’ll have put yourself in a position where the opportunities will come.
So don’t force it, don’t aim for it too directly, just be active and do the things that make you feel good about yourself, and let the “guys asking you out” thing take care of itself. It’ll come.