So ...

We are going to use a handy widget called Feature A Page Widget.

Here it is:

https://wordpress.org/plugins/feature-a-page-widget/

It's a tiny widget (74 KB), but let's see the usual speed tests ...

Here are my results before installing the plugin ...

... and the result after installing and activating the plugin:

No more comments needed ...

So, let's see how it works ...