My stance on this starts with the things that a lot of people for the most part can admit are problems. Corporations with the power and wealth of small countries, concentration of money in the hands of a few, absurd costs of living, decreasing access to education, the environmental crisis, constant wars that destroy poorer countries, and in many countries poor healthcare outcomes. And this is by no means an exhaustive list.

Now why do these things happen? In my opinion the origin of these issues comes down to private ownership of vitally important organizations and infrastructure, and the resulting profit seeking regardless of the consequences. This also is how I would define capitalism, because capitalism is at its core only a way of organizing the economy.

There are then multiple answers to how we should address them. Regulating companies and reforming capitalism without addressing the root issue are a common one, and in some cases somewhat effective. However, in most cases such movements(which I would call social democratic) have a tendency to quickly walk back their achievements. For example, Tory attacks on the NHS in the UK have contributed to its reduction in quality. Or the walking back that the Mitterand administration did in France. Or the deregulation of trucking in the United States which led to substantially lower wages. This is also a western-centric argument on my part, because social democracy also relies on ruthlessly exploiting poorer countries' workers but that's a whole separate can of worms.

One could think of this backtracking as faults in the political system, which they perhaps are, but I think they are inherent to capitalism, because when you have such overwhelming power in megacorporations, they will inevitably eventually get their way as long as they exist. It's the equivalent of being surprised that you will eventually burn up if you try to stand on the sun despite your thermal shielding or other mitigations. Which isn't that absurd of a comparison because the sun's surface is only ~15 times hotter than a human if you measure from absolute zero.

The next answer is to try to, through monopoly breaking or other means, to revert capitalism to a former state of less concentrated capital. This is a fool's errand and a reactionary stance in most cases, because monopolization is inherent to capitalism, especially now that companies' fixed costs are immense, but the marginal cost of each new unit(be it a package sent through a carrier or a complex electronic device) is nearly negligible in comparison, making a monopoly the inevitable outcome.

And about at this point in my political development I found out about Marxism and it's overall proposal for an alternative to capitalism, and I found it the most compelling. The history of Marxism is also a whole separate can of worms so I won't go too far into it, but I agree with the Marxist class analysis that there are owners(most of which aren't even individuals anymore) and workers, and that workers' main political strength are their numbers. And a lot of capitalism reform proposals do actually rely on mass political organization of workers. Now what I say is, I think we can be more imaginative as to what that power can be used for. I don't think what comes next after capitalism will be perfect, but I think we can do much better.