Hi fivefootzero, and welcome to Scarleteen!
So, if it's important to you to have sex for the first time in a more committed relationship than a hook-up, I would advise against having casual sex because you feel like that's all you can get. That way lies feeling disappointed and crummy; not because casual sex is inherently bad, but because when we compromise something that was important to us around sex, it tends to result in some not great feelings. Too, the idea that boys gain love through sex while girls need love to happen before sex is actually very inaccurate. It's based in stereotypes about how the genders are "supposed" to be. Whether or not a person is interested in casual sex or only wants sex within a committed relationship has less to do with gender and more to do with personal values, preferences, and experiences. So, you can let that assumption go when evaluating whether or not you can find someone to date who isn't just interested in sex.
As far as being horny and lonely, there are things you can do to ease those feelings. Masturbation is a big one. But so is finding other ways to fill that need for company and intimacy (I mean intimacy in the broad sense: Intimacy: The Whys, Hows, How-Nots, and So-Nots
). Can you give me a sense of what your social life and social circles are like?
Too, sometimes the context where you're meeting boys can have a big effect on whether they're looking for the same things you are. Are you meeting guys in class or during your hobbies (or were you, prior to the pandemic)? Out at clubs or parties? Somewhere else?