any orgs for seniors?

Hi I’m a junior and i felt that it too late for me to join an org and rush events had pushed. does anyone know any orgs that are happy to take in senior? or is it too late? i transferred to ut my junior year so navigating was hard and i had missed rush events. i want to have good friends before i graduate and i might stay a little longer to finish school. i just really want a social life and i was wondering if spirit orgs is a good way to make some or should i just accept that its too late for spirit orgs or greek? help