It's really a difficult thing but you could even make this a full-time job. I know plenty of people who went to USA and then started being a Uber driver after a while, and they started to make their entire living out of that.
Of course, these were not people who were uneducated or anything so they had some skills that they could use as well, but they just didn't because Uber made them THAT much money. I know a family and both husband and wife they do Uber and they are making more money than median family income of an American household, which is about 60k give or take, and they are making about 88k together per year, which is proof of how much you could make with these.
That is an unqualified job that you do if you can't do better, that's the difference. Sure, there is a possibility that you could make a living out of it, but there are so many things wrong with that, the wear and tear of the car, the need to buy another, constant repair needs, the fact that you are only capable of making money if you work so if you are sick Uber won't pay you, and many others.
This is why it's better to actually have a career if you can, if you can't then you could do Uber and there is nothing wrong with that, but if you can build a career, in any field, and master it and be great at it then you should definitely be doing that instead of driving Uber, because it will pay better, and it's more comfortable.