I think this the main reason why people don't use PGP encryption more often or even don't check the signatures because is too complicated.
I wonder if there is no improvement possible?
A very easy to use, super user-friendly PGP software that every not tech-savvy person can operate would be a perfect solution.
If you think about it, it really isn't complicated at all. All you have to do is read the instructions and follow them. The problem is that people are lazy.
Start by downloading GPG4Win and the install it. When installing you only need the Kleopatra component so you can skip the other things included with the software.
The first step mentions you only need Kleopatra so don't even bother installing the rest or if you do, you don't need to use them ever.
Everything else is explained step by step. There are even pictures.
https://bitcoinelectrum.com/how-to-verify-your-electrum-download/