TalkingCat-

You can also circumvent geo blocking with a proxy, some of them are free, do not send any sensitive info on the free proxies however, not that a paid one is intrinsicaly safer, just like vpns.

To be fair someone that uses DDG most likely already has ublock origin.

Unlikely, they would use checksums for this, not the filename.

You enable the minimum necesary for the website to do what you need.

Pi-hole doesn’t work for blocking youtube ads, it is the weak part of dns adblocking, since you’d have to block youtube itself

Eh, depends on the project

Have you tried Wireshark?