1) Take part in more club activities, such as drama competitions, so that you will have contact with girls.
2) Take various exams, such as accounting exam, computer grade exam, postgraduate entrance examination, etc. So you can ask girls to go to cram school or study together.
3) You can invite girls from the same class to go for a spring outing, or sing songs together, celebrate birthdays or something, and you can associate with girls.
4) You can make friends on campus or other websites.