What's the optimal set-up/background for a Zoom meeting or interview?

Ideally, the background should be clean and clutter-free. If you can't find a suitable place in your home, your local library, a coffee shop, etc, then sub in a blurred background, a solid color that flatters you, or a "professional one" like an office/library with books or the like. You don't want to choose something that screams for more attention than you - You are the focus and you don't want to distract the interviewer from your message.

Age Barrier/Older Job Seeker (How to overcome age discrimination)

We understand deriving satisfaction from work. Don't let fear hold you back. Go for it. Show your energy and enthusiasm and all the skills you offer. If you lose out on one job because of age, you will land another.