I truly believe the only solution is to bring down the current system, which includes the technology that enables it.
The key strength of a free-market seems to be that it assumes people will act in their own self interest and it creates a space where we can a get a roughly ‘win-win’ situation. That while you act in your self interest both you and the community are rewarded. So starting a bakery would give you a financial reward and others baked goods at a competitive price. Assuming that changing the system will force people to stop acting in their self interest seems to be how alternatives go wrong.
"Things are bad. They shouldn't be like this." OK, could be. "We should destroy it all." Yeah, will that make things better, or worse. To not have the current set of problems doesn't mean you have no problems. You can have far worse problems. So before we agree to tear it all down, you have to convince us that 1) your replacement will actually be better, and 2) you have a realistic plan to actually bring that about. Otherwise, you're just one more vandal, destroying but not building.
We have solved nuclear fission power, created vaccines for COVID, and went to the moon. Surely we can go back to a world of greater sustainability than now.
Plenty of older societies had more strict regulations to soften the devastating effects of the free market. At the very least we should reinstitute customs that prevent unfettered economic growth and more sustainable population levels.
You have to have a realistic replacement for the current system, and a realistic plan to get there. Without that, bringing down the current system won't lead to something better, but to something worse.
I'm not sure about that at all. These three things you listed are just science/technical problems, while the latter is a governance problem. Governance is much harder than science and technology.
Unfettered capitalism is certainly worth criticism. A just economic arrangement is one that rests on a sound philosophical anthropology. Of course, a good portion of those raging against "the system" are driven less by moral concerns and more by envy masquerading as moral concern.