If you have musical expertise or like to perform on stage, you can ask the entertainment department if it is still recruiting new people. There are performance positions and backstage lighting secretary positions. Ask them all.
If you don't have special skills, but want to make friends, you can join street dance clubs, skateboarding roller skating clubs and outdoor sports clubs, which are generally long-term recruiting.
There is no difficulty. Sign up to be a volunteer in the school. You can know and help many people, and naturally you know many people.
When interviewing these, I hope you can be confident, and you'd better dress formally and beautifully, because the first round of recruitment for freshmen has all ended, so don't be discouraged if you refuse.
Make yourself better, learn musical instruments or other specialties, stay in shape or actively participate in various school competitions to make yourself attractive, and girlfriends and boys will naturally come.
Remember, it is easy to make friends, but quality is very important. Better short than extravagant. University is a small society, and four years is neither long nor short. It will be very happy. Go well and be confident.