My confusion over Corona isolation rules by Zubayda from TG

As many of you may know, rules for self-isolation with coronavirus have changed. I thought a person could choose whether to self-isolate or not even if they have symptoms. Test positive on a lateral flow or live in the house with a person who has tested positive. When I recently tested positive after the rules of mandatory isolation were revoked and I chose to isolate myself I thought did I really have to is this advised? OfCourse I wasn’t as my parents believed isolating to miss school as