When you use services like NordVPN, Mullvad, Surfshark, etc., you're just installing a VPN client, and you're basically just using them as a reverse proxy to hide your IP address (present it as coming from another country). That is the use case you are talking about.
Tailscale is very different. It is about setting up your own VPN so that you can access devices from your home or wherever from the Internet at large in a secure manner.