This is incredibly bad advice. Opera has the worst security track record of every other major browser, and clicking that ad blocker button routes all your traffic through a single endpoint at a Chinese-owned company. Hello surveillance! Even the routers... haven't there been enough remotely exploitable flaws in those archaic router vendors to recommend against using them at this point? You might get a VPN in name but you'll get none of the security that comes with them that way.
You should setup your own personal VPN server if you can. We wrote Algo VPN, a set of ansible scripts that automates the process as much as possible. It contains the most secure defaults available, works with common cloud providers, and does not require client software on most devices.