Scottish people can pronounce the same sound! When you say "Loch Ness" with a very thick Scottish accent, the "ch" in loch is quite close to it. Also the sound is quite common in other languages: "roi" in French, "reisen" in German, ... Even some Spanish dialects like Galego have the same r. Only Castilian/normal Spanish doesn't have it. OTOH, just ask a Brazilian to pronounce simply "the". The "th" phoneme is quite…
Hardcore: Rardjee-Core
Armlock: Army-locky