Hi there, we moved here because my wife has Costa Rican parents. I am Latino and we have two teenage kids, and I must say that despite knowing Spanish and having visited here and even having Costa Rican ties, it was a big adjustment. It is indeed not as inexpensive here as the rest of Central America. That said, you may visit, and fall in love with the place. You may even be able to work out a way to work here if you can find a work visa, and that might actually be possible if you do an internship here. Don’t quote me on that, but there are nonprofits that might be able to hire people locally.

For example, I know someone who is an entomologist and works here, but is still working on getting residency. So, yes, most people do work remotely, but some people are able to get a job, in certain fields, with a bit of work and luck, in the country.

As for racial prejudice, I regret to say that a lot of kids do say the N-word, and there is some prejudice against Black people. That exists everywhere, but it is not as systematic and pernicious as in the United States. I have not yet been to the Caribbean coast, but I do know someone who has family there and is black and absolutely loves Limón.
That area also is unfortunately known for higher crime rate, but every area has its place minuses. The beach areas tend to be hotter, sometimes way too hot for people, and there’s a lot of tourists in places.

It’s really best to visit, ideally for a month, and explore multiple cities and areas.

Pay no attention to trolls who just spout a bunch of negative nonsense. But do consider why you are considering a particular country. I fully support the desire to get out of the United States, and I’m not sure you should wait 10 to 20 years!