I've had a similar experience, although not entirely unexpected. From everything I've gathered, meditation and guided breathing are tools to use to fight anxiety, but are by no means sufficient on their own for many. I've found that daily meditation and guided breathing can sometimes have the opposite effect for me when I'm not struggling as much by bringing me back to an anxious state. At the same time, working through their intro programs has definitely given me some tools and coping strategies that help me when I find my anxiety rising.

Also off-topic a bit, but for me, the single most impactful thing I have found for coping with anxiety is regular strenuous exercise. I'd been told this for years, but it's only recently that I've taken it seriously, and can now feel my anxieties begin to bubble up when I get out of my exercise routine. It's been so impactful that I just always want to make sure I highlight it when discussing anxiety, since it took so much time for it to really sink in for me.