TL;DR: slept with a tall landwhale caucasian that only likes black men. (Huge red flag), keep thinking about her because of my low abundance/desperation

For two weeks, I've been talking to a girl who works on another department (i know, don't shit where you eat) and we had sex on the second date, third date another time, then she starts acting clingy because I do not respond to her texts all the time. I stay calm through our interactions, but she gives a lot of attitude. When she told me she only likes black guys, (I am black) I knew I fucked up. Because girls like that are usually trashy I invited her over for a times on Wednesday, she told me.nah.. . And now I feel like a loser because Im overthinking her reply and want to fuck her again. I'm an idiot I realized she's my only source of sexual satisfaction and I'm easily into it, so basically I'm going to reread the sidebar.. Any recommendations on not being a fucking beta that chases fat women?