VPN - change your IP address - Can you be traced even while using vpn ? working and uses

YouTube Video Link :
https://youtu.be/5X01z4i51sg
Via YouTube Channel : AboutURL This video is about vpn - virtual private network . It tells about uses of vpn , safety and anonimity they provide us and a lot more. How can you be traced even while using vpn ? What are routers ? What is importance of routers in a network ? Understand client and vpn server communication. How vpn protects us from man in middle attacks . Why vpn are slow ? Change your IP address using vpn and surf anonimously .