While I am not a free market absolutist, I think your assertion is based on judging negative outcomes of a free market vs the positive intentions of regulations trying to prevent those negative outcomes, i.e. you’re not considering the negative outcomes of regulations. I don’t think any free market advocate would state categorically that they produce perfect results, merely that any attempt to prevent certain negative outcomes through law will produce different negative outcomes elsewhere.
For instance regulations tend to incentivize very large corporations to advocate for more regulation as it raises the barrier to new competition entering the market place. Another example would be over burdensome regulations that slow the production of housing which constrains supply and prices a lot of people out of the market. I would have loved to take public transit where I lived a few years ago, but they spent a decade on environmental impact studies while traffic and the environmental impact from it got significantly worse.
There’s also a time component where the effects of regulations can take decades or even generations to really play out, but people tend to only remember the well-meaning goal of the regulation if they remember it at all. This tends to be very beneficial for politicians who end up being judged not on outcomes, but intentions.