Therapists always seek to avoid dual relationships. A dual relationship is any relationship that has two separate facets to it. In the case of a therapist, you now have a professional therapeutic relationship with them. That is the only relationship that the therapist can reciprocate, if they like to follow professional ethics to the letter. Any additional relationship -- e.g., following you on social media -- is a potential conflict and a potential dual relationship.

Since most therapists take ethics pretty seriously, it is likely they unfollowed you to avoid a dual relationship with you and abide by their professional ethics. It says nothing about you as a person, just their effort to keep to their ethical guidelines and ensure the relationship with you remains professional.

This is a peer self-help community, meaning it is a place for folks of every stripe to come and find support for mental health, relationship, and other issues. There are virtually no professionals on these forums, and for the ones who are here, they are here to get mental health support or to give it as a non-professional. As we say in the footer of every page here, always consult your mental health professional before trying anything you read here.

Cheers.