Hi, I'm Elise, a fellow user like yourself and I'd be happy to help with your issue.
You can't use a VPN like Windscribe for this purpose, what the article which you read regarding VPN usage would be taking about setting up your own VPN server that you can access remotely.
Unless you have another device you are going to solely use as a VPN server you won't really get the full benefit of that arrangement.
There is a good article here which guides you though one method of setting up a VPN server, but there are many many different ways of doing this:
https://www.privacyaffairs.com/home-vpn-setup/
If you are going to use just RDP without a VPN, make sure you port forwarding on your router is restricted to just 3389 and this will also limit that scope of access to your PC.
Please let me know if you need any further assistance.
Kind Regards,
Elise
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.