It sounds like Rush didn’t work out as you hoped and I’m sorry about that. Although I wasn’t in a sorority I know it can be super stressful. As you know, primary recruitment has already happened. There may be some options for informal recruitment in the spring. Based on your prior post, I think you are a sophomore? Even if you don’t end up in a sorority hopefully you’ll have an opportunity to find your people on campus. Not everyone is in a sorority, and even for those who are it doesn’t have to be the only avenue for making friends.
I know you asked how dirty rush works, and I’m no expert but…what exactly do you want to know? It’s definitely true that sororities at a lot of schools start looking for PNM long before formal recruitment starts. Some have parties where their current members invite girls they know who are seniors in high school to parties on campus to get to know them ahead of recruitment. I’m not sure if that is considered “dirty rush” or not, since it is before recruitment starts. I think all of them look in advance at social media accounts for girls who register for recruitment. I know there are rules about not promising bids, and not being in contact during formal recruitment except at formal events. I’m sure some follow the rules more closely than others.