Why did printing errors appear?

Question

Seal

Hello. I have been sitting at a PC for more than 10 years, I don’t know how to print, especially when I’m blind. Already for about two years I began to notice that I often confuse letters in places when printing. Even writing this title is a mistake. At first I thought that something was slowing down somewhere, but I make mistakes on any configurations, systems and keyboards.
Maybe someone has heard of something like this? I didn't type faster, I didn't type sloppily. But something is happening and I don't like it. Moreover, this is progressing - there are more mistakes, although I try not to make them.
Thanks to everyone who advises.

Answer 1

Well, the problem is definitely not in software or keyboards, if you write that you make mistakes on any configurations, systems and keyboards.
It is likely that you have become distracted attention. Or just pick up a comfortable keyboard if the errors are that the wrong letter (past) is typed.