Aussie Frugal Living

Cheaper cuts are what you want - chuck /casserole meat. It's cheaper because it's tougher, which means it's perfect for a slow cook to break down and tenderise

If you're learning about meat from American youtubers you're learning American terminology for a cow being butchered in the American method. Thats a whole other rabbit hole once you involve the british and french methods...

Chuck beef is the cheapest and best for slow cooking and its usually pretty easy to find. Its not necessarily "cheap" but it stretches.