At least on Android you have NewPipe, which is an easy to install alternative Frontend for YouTube, or YouTube ReVanced, which applies multiple Patches to the original YouTube-App in order to make it more useable, however sometime the patching process causes trouble.
I’m currently using Revanced and it still works like a charm and completly adfree.
I vaguelly remember around this time some low end computers were shipped with FreeDOS instead of Windows, in order to save on licencing fees. AFAIK this was the case because legislation in some european countries restricted the sale of new computers to ones which had an OS preinstalled.
Maybe XP was installed after the purchases however a partition with FreeDOS/whatever remained as the default boot option. Hence your parents had to select the other boot option (Windows XP) manually. Granted you could change your primary boot partition permanently, but maybe your parents didn’t know this.
Don’t shame others into donating please.
In order to participate in modern life you have to own a device which is able to connect to the internet. Also older devices get often gifted away to those who can less afford them.