Openly gay and trying genuine approach

So I'm the only openly gay guy in my highschool that is well known and my town has no problem with it, but it's been 3 years and I haven't gotten one slight date request from any guys in my area. Please note 1400 students attend my school so the odds should be higher. How do I go about building up the courage to even ask supposed straights guys out? because I get frazzled just keeping a convo online with them. And I'm super worried about rumors leading to regret. Please help me I'm feeling lonely and I'm refusing to use any apps because I get too judgmental and their faces doesn't end up matching with their personality.