VPN(virtual private network) masks your identity and makes your request private. Which means your IP address is made with the VPN’s IP address and the VPN creates a separate tunnel for your requests when anyone tries to track you on the internet it will be difficult for them to track you
Pros:
Makes your internet private and encrypted
Helps you to reach many remote websites
Hides your location and fools your footprint on the internet
Helps you to get rid of cookies and tracker
Here is the real-life example if you travel to China, there the google services are restricted there you can use a VPN service to access your Gmail and other Google services
Con’s:
Usually, free VPN tends to get connected slowly
Using a VPN doesn’t make you foolproof on the internet completely
But for a general user, it is the best addon security layer