I constantly search around the world, but most lands do not qualify because of local political rules. My best is a 100 acre(!) forest on the slope of a mountain. I have several mountain plots with a whitewater river flowing all year. Land plots with an entire forest or lake.
I tried to offer land in Kazachstan, Ukrain, Bangladesh, India, Argentina, Costa Rica, Australia and the Amazon rainforest but either foreigners are not allowed to own land or it is without Starlink or fiber backbones where not available or the country is involved in a war.
Above $50K (including the land, mobile house and infrastructure) I have a lot more offerings worldwide. Islands in Belize or very remote pacific islands, but you need a boat so its more than $50K. Desert locations, but you must have 4WD and only have two satelite or radio 100mbps connections and need multiple batteries, no fiber. Medical facilities only by plane or helicopter.