There are major cases where government intervention helps.
For example, fixing negative externalities, or acting on behalf of consumers who have imperfect information and can't hold everyone they deal with accountable. Because of the government you can't just dump your waste in the river and watch it float away, screwing everyone downstream to save yourself a small amount of effort. Because of the government you can't sell products that seem to work fine but kill people 20 years down the line from heavy metal poisoning, and so on. You can imagine free market solutions to those problems, but not ones that are likely to work in practice, I think.
Government interference is often a horrendous, wasteful, corrupt shitshow. Most people seem to think that everything that's ever made anybody sad should be solved by passing ten new laws about it, and every day the government turns into more of a bloated mess. But if you make me choose between that and total lawlessness, then I have to vote in favor of the lesser evil.