Amsterdam has several student associations and sport clubs you can check out.
ESN Amsterdam is the student organisation that helps students get the most out of their exchange by organising cultural and social activities. The Cultural Exchange Ambassadors Programme gives you the opportunity to share your exchange experiences and work with a diverse group of students.
UvA IDEAs is a platform run by students with disabilities. They are committed to an accessible and inclusive UvA. They also have a sounding board group within which students can interact with each other, and exchange experiences and ideas.
Register with Online Study Space and take part in (for example) a self-study session where students help each other to study and remain focused.
Are you not feeling well and in need of a conversation with someone else? There are several initiatives and possibilities for you to talk with someone such as another student, a coach or a psychologist. Feel free to reach out and don't be embarrassed. It's often a relief to share your situation with someone else.