"You are being"watched" and targeted for lateral
Get out now."
I agree with this.
Here is my thought. If they do not appreciate your job, then they do not deserve your effort to work there. I would look for a different job.
You already have two years of nursing experience, you are much more marketable than brand new nurses.
There will be lots of other employers would like to hire you.
I understand you want to stay in same employment for a long time, and it is kind of scary to move your job to a new facility. but it is not worth to take antianxiety/antidepressant or any medications to work with that type of enviornment.
Nursing itself is a stressful job already and when working environment is like that, and all the negative vibes make even harder to work there. Whatever they are doing is their loss.
Here is one thing you might want to do. If your manager is actually accusing you of something that you didn't do, tell the manager that you want to have a meeting to discuss whatever they are accusing you about, but you want your manager's bosses to attend the meeting as well.
And, also mention this to your manager that you can sue them for their false accusation.
and save all the coversation(e-mails), between your manager and you, for your record.
Start looking for a different job.