Not all faculty profiles are updated. Many profs do not advertise if they are taking on students because they might not know in advance.

If you are looking to connect with faculty, start by having a conversation with them. You could possibly survey one of their courses, see if they are a good match for you, and try to have a private conversation around their availability.

If you are really struggling with your advisor or supervisor, please know you aren't alone. We validate how hard these situations can be. You can find some suggestions and testimonials related to changing advisors/supervisors in "Managing Your Supervisor Relationship" section.