Position had been filled and no one cancelled the interview , really unprofessional and very unorganized waited in the virtual meeting space for over 15 minutes before I reached out to someone so that they could tell me the position had already been filled

Interview process is fair and straightforward, and is an accurate forecast of the work/coworker culture. Grassroots requires logically, ethically, and emotionally apt people to exist and if that particular interview does not go well it does not suggest it will be a good fit. If it does, you will work hard with some of the best people of your life.