My grandma at 78 years old is perfectly capable of using her smartphone and laptop to look up prices at local supermarkets and the newest episodes of her TV shows via voice search (she can't type very well because of arthritis). It's never too late to learn.

"I'm not good with computers" is a weird way of saying "I stopped living in the present time 25 years ago".

Notice that these are remotes for a TV and stuff, not computers. This should give you some insight into how people might remain not good at something ubiquitous!