Don’t wait for a layoff, start organizing a union for that juicy ‘represented’ employment status (as opposed to at-will). Unions can’t stop layoffs, but they can minimize the impact, negotiate a higher severance, and provide advanced notice. I highly recommend the good folks at CODE-CWA, they specialize in organizing tech workers

I live in a constant state of fear and misery

And employers love keeping you in that state

My dad has been a server engineer for a single company for my entire life and he lived like this up until quite recently. His fear oscillates in magnitude with the success of the industry the company is a part of course so it isn’t always severe but I remember every few years as a kid I’d hear him and my mother murmering about lay offs. These days he just jokes about it being an early retirement