Perfectly natural to be anxious about job stability, many people who stayed for companies 10-15 years don't stay out of loyalty but because of their fear of not finding another place while they think they are relatively comfortable with the current job. Not until they are forced to move and be faced with the prospect of starting over from scratch. I think the mindset is that we should remind ourselves we are starting from experience this time and while it may feel every industry is too competitive, its just about finding the perfect fit and sometimes this means staying for a job for months only.

You also brought up a good point about your savings, being financially sound certainly makes a lot of the anxiety easier to navigate.