BALIR (Belgian Association for LGBTQI+ International protection- seeker and Refugees) is an organisation for LGBTQI+ refugees and protection seekers in Belgium. They offer legal advice and support through a buddy system. People who wish support, can become a member by filling in a form. This form can be found at the bottom of BALIR's webpage.
Several organisations that have joined çavaria support LGBTI asylum seekers. You'll find an overview of all self help organisations that joined çavaria on their website.