Work Anxiety

Hi, I have so much anxiety with work. I’m trying to get transferred to another dept, but it’s going too slow and the mgr I want to work for hasn’t even filled out the req yet (it’s really busy right now). I work with toxic people in a very micromanaging dept, and am a lot older than many & there is some ageism. They like my work and put me on lots of projects (I have the heaviest workload on the team), so that’s good, but they are very disrespectful towards me. A consultant from another dept recently stole an idea I had, presented it, and now they put her as the Lead for it—no matter that I had proof it was my idea. I have faith and try to not “spin” with my anxiety, being angry, and feeling disrespected, but it’s so hard. Any advice anyone has would be so appreciated. I need my job & not many out there right now, so this is it for a while.