Find a new job as soon as possible. Even if the promise of no more layoffs is true, when the atmosphere affects your ability to perform, you gain nothing by staying there. Your mental health should be top priority.
Also, if anxiety causes you to underperform, if/when there'll be a new round of layoffs, you might be on the line anyway.
Also, if anxiety causes you to underperform, if/when there'll be a new round of layoffs, you might be on the line anyway.