>It's always good to invest into a VPN.
No.
Running a VPN is a great way to earn a little bit of pocket money while collecting a great deal of sensitive information.
https://www.bleepingcomputer.com/news/security/how-to-secure-your-network-five-modern-alternatives-to-vpn/
https://vpntips.com/how-to-setup-a-vpn-server/
https://proprivacy.com/vpn/guides/create-your-own-vpn-server