Over 50 year old here (ancient by zoomer standards!) and can attest to the rampant ageism in corporate America. I've encountered lots of outdated attitudes in interviews that folks above a certain age (40?) are not malleable, we can't change, we're not tech-savvy, we're stuck in the old ways of doing things, etc. Add to this that most employers think we're also a drain on health care costs, will call in sick frequently, and will soon retire, and it becomes almost impossible to land a good role over a certain age. The irony is that I'm at the top of my game professionally with a can-do friendly attitude - most employers would be lucky to have me but it's been an uphill battle trying to convince them of my value.
To my female colleagues above a certain age, I feel for you even more as you have it even harder. I literally know a handful of swoosh colleagues who started budgeting professional hair dye & Botox into their budgets to try to avoid age discrimination in the workplace. And what about POC above a certain age? Yikes.