Why did black people get enslaved so much more than native Americans in the US (or it appears so)?

 

The natives died.

There were early, and indeed ongoing, attempts to press natives into service, from Columbus and the Taino to the mission system in California. They didn’t work. First, native captives tended not to end up far from home. If they managed to escape their captors, they were in familiar terrain and could often find their way to friends and relatives. African captives didn’t have anywhere to go.

Moreover, they put a lot of indigenous people together in close proximity to one another and to European settlers. This made them hotbeds for imported diseases. Africans were no more vulnerable to these diseases than Europeans, but indigenous Americans died in droves. Any population of natives quickly dwindled away to nothing, which meant they couldn’t provide a reliable source of labor, so colonists turned to Africa as the nearest source of forced labor.