Meeting Current Members

I'm a freshman from out of state and I heard to join most top or mid tier frats on campus you have to know people in them already. Does anyone know how we're supposed to meet members this year with no parties, in person clubs, or classes? They keep saying reach out but I heard texting/emailing people in them doesn't do much. I haven't heard anything from any houses yet. Do we just try for a lower tier houses if we know no one?