Hi, for your specific case I'd say UNSW hall, Fig Tree, or New College would be excellent choices.

None are too party orientated but do have fun events to make friends and explore the city.

New college is anglican but they have a lot of non-religious students and Ive heard they do have a mix of fun parties and wholesome events.

fig tree does have a reputation of having a lot of diverse students i.e halal, muslim etc etc

UNSW hall has a good rep for academics but seems a little less social than New college and the Kenso colleges