@alewis24 Please allow me to echo the welcome from others here.

A transplant at any age is life-changing. No doubt you are on several medications to prevent rejection. Do you have an annual transplant review appointment with your team? It may very well be there needs to be an adjustment on the list of medications you are taking, or a change-up to the dosing.

A chronic condition, such as the underlying kidney issue, can be a factor in anxiety and depression. I think it would be well worth your time and effort to look into speaking and working with a therapist, getting insight to what is behind how you are feeling. I am really glad to read your post, and that you recognize there is something you want to address and get better! That all by itself, is a healthy sign, believe me!
Ginger