You will never find me arguing it is not a problem for those who lost their jobs and way of life. That is true. It is a problem for them. And for to long, their complaints were not taken seriously enough.They are not problems for libs like you, but for those who lose their jobs because of unfair trade practices they are a real problem - not that you would find that concerning.
That's why I pointed to the agriculture example, in moving from agriculture to manufacturing, many people lost their jobs too. I doubt the solution was like lets go back to days of "everyone is a farmer"
Yes free trade collectively makes us all better. Goods become massively cheaper, just about anything that isn't services that require direct US labor became much much cheaper. But you are right there are people adversely affected.
The textbook solution is not tarriff eveybody and protect local manufacturing. The textbook solution is tax the winners and use that money to re-train and subsidize affected people. But well politically, that's a challenge, some people have convinced the rest of everyone esle that taxing winners is wrong.