The US is pretty evil and sanctions on Cuba just affect regular people on the island and keep Florida politicians alive, but Cuba is way eviler. They don't export doctors, they do human trafficking for the enrichment of the communists and their families. Many of my friends were sent to Brazil and Venezuela as doctors, of the 3000 a month dollars the governments of these countries paid them, they only got $200 a month and the gov kept the rest while they were risking their life's in bad neighborhoods and very isolated places in the Amazonas. Does this money go back to help the regular citizen? Nope, it goes to Castro's families and the other new commies that are in power now, there is more poverty, and there are very few hours of electricity in a day right now, there is hunger compared to or worse than Africa and Haiti, there is repression and incarceration of young people who are protesting regularly, including 16-year-old kids and young women. It's that the embargo fault, nope completely, there is no production of anything, communists steal everything for their own enrichment from the government companies. Their media brags about the doctor exports and being a medical potency, yet my mom spent 4 months in pain to see a doctor because all of them have been exported or young ones left the country. There are zero medicines and one person in my family almost died of COVID if they didn't move fast and bribe the hospital director with dollars and suddenly there was medicine. Did they help fight apartheid in Africa? Yep and that was nice but they sent people against their will there, people who were kids and were in the mandatory military service, if you refused to go they did acts of repudiation (
https://en.wikipedia.org/wiki/Acts_of_repudiation) with your neighbors and got a job was hard or impossible after you said no. I still know people traumatized from that war.
Source: I was born and raised there my entire life, and just came from there last weekend.