it's just not something you can extract easily in countries that care about their citizens so it'll always come from a shitty place
First two countries for known reserves are Australia and Canada, together they hold around 40% of all the uranium reserves of the planet. Uranium could also be extracted from seawater, obviously at a much higher price.
It's just that it's easier to extract it where exploitation rights for land is cheap. But that's unfortunately also true for many materials we need for renewables