It’s clear that some people have a natural affinity for some of these “tests”; one might more accurately call them word games. There has always been a huge variance in how we do on them.
Take Wordle for example. Some people slam that consistently. The people who don’t are not wired that way. That’s not early dementia.
The best way to remember anything for most of us is to stop trying to remember it. Things I couldn’t remember earlier often come to me in the shower. Does soap stimulate brain function? Hmm
I’ve often thought I do my best thinking in the shower. I don’t think it has anything to do with soap.