Hard work and discipline are needed, for sure. They would become more prevalent traits if workers weren't as well off collecting government benefits as they are working. The education part, not so much. A high school education should be all that's needed to do the jobs being discussed.
What has to change is the unfair competition from invader labor for those jobs. The other thing that has to change is foreign products undermining the jobs US workers would have if manufacturing came back to the US.
Until those two things happen, wages will be unnaturally low, because there's too much availability of cheap labor.
I would gladly pay more for a product or service here in this country if it meant that no illegal alien was employed in doing so. As far as I am concerned allowing these criminals to infest our society carries and inestimable consequence that will devastate this country. Allowed to continue, the America that was will no longer be. Just another third world sh!thole, IMO.