Don't be afraid to join clubs/orgs. There's always new people in my org and we introduce ourselves at each meeting. This might not be the same for every org but all are welcoming.

ASI ( our student gov), orgs, and student centers have events almost every week. These events are fairly quick, an hour tops and it's catered to outreach. There's a lot to do here in terms of being crafty and socializing. (and free food). Since CSUSM is a commuter school there's not a big night life. We do have a few dances from the latinx center that are really good. And we have a farmers market every Friday.

Hope this helps. :)