How to Make a Proxy: What’s the Easiest Way to Set One Up? or How to Make a Proxy – Any Simple Method

For a no-code solution, FreeProxy (the software) is old but works. Just install, pick your settings, and go.

If you’re okay with a tiny bit of setup, Squid has Docker images that simplify things. Search for "Squid Docker proxy" and you’ll find one-click setups.