Thank you so much for sharing this. I've been dealing with the exact same situation for the past few months and I am really happy to hear that your manager was supportive.

I am confident that it will get better! And you should be too.

Also, I am not sure if you are doing therapy, but I would really recommend David Burn's CBT guide [1] (the meat of the book is in the first part).

[1]: https://www.pdfdrive.com/feeling-good-by-david-burns-e334132...

Right now, there's someone thinking of you and believing that you will continually improve :)