Capitalism is better than feudalism, yes. The problem is that Capitalism inevitably gets to the point where it is more detrimental to the population as a whole than it is beneficial (Global Warming, Wealth inequality, power imbalances, etc.), and that point is now.
Capitalism did bring us many advancements, but we have outgrown it. Just because it did good things at some point doesn’t mean that there isn’t something better. We should all be striving towards better as a species, but we aren’t.
Europe has many more Social policies than the US, but it is nowhere close to equally parts Socialist and Capitalist.
Socialism means that the Workers own the means of production, and there is no country in Europe where that is the case.
Social policies != Socialism.