Europe is (in my opinion) the best place to live in regarding phone choices. Here’s why:
In the USA and to a lesser extent, Canada you don’t really get much variety. You have iPhones, a few Samsungs (less than half their range), some LG, minor brands like Motorola and that’s about it. Chinese brands like Huawei are a big no-no because of economic protectionism. Some phones are more expensive, others cheaper (regarding exchange rates etc. To make things more complicated most people buy their phones from carriers instead of sim-free, making switching harder, the phones sometimes more expensive than they should be and filled with carrier bloat.
In China...well, for one Google and many other companies are banned or not present, which kinda sucks regarding popular apps, software and services. You do get big names like Huawei, Xiaomi, OnePlus and OPPO there, and they in addition to many others like Samsung and Apple are also more or less present in the rest of Asia, with Google services. Problem is (like with South America) due to various regulations some updates and features aren’t allowed (e.g NFC sometimes).
Regarding Africa, the number of phone companies reliably operating there and network coverage is far from ideal, although it depends where you are.
Europe isn’t perfect, but you get Google services, all the brands (worth knowing) you could want have a reliable presence there with nearly all their phones being available (Samsung, Xiaomi, Apple, Huawei etc...even smaller ones like Nokia and Motorola) at a decent price compared to other regions.
Sim-free phones are much more common and easier to buy and carrier bloat doesn’t really exist (e.g in the UK banning carrier locked phones is about to be made law)...switching provider is also easier. Network coverage isn’t ideal but is pretty solid, and you can be sure that features like NFC are allowed there, including future ones. European governments/regulators are cautious about security, yet they remain pretty much true to capitalism and free markets by not engaging in prejudiced economic bullying like the USA against Huawei without evidence.