Need advice for grad school

So I'm not one to post online but I'm in a rut. I'm trying to apply to grad schools online and am having a hard time finding my second reference. I did my bachelors completely online and didn't get to connect with any of my professors. What type of person would be okay to use as a reference and ask them for a letter of recommendation? I've asked all my professors and they've rejected me saying that I was a good student but since I wasn't a TA I wouldn't be considered....