Too bad there isn't some sort of free market based mechanism that would inherently account for all of these factors without you needing to think about it.
I'm not sure if this is sarcastic, but there quite literally is not a "free market based mechanism" to do this. If there were, there would not be the market failure that we can observe today.
There are plenty of market-based methods for accounting for these externalities though, such as Pigovian taxes.
There are plenty of market-based methods for accounting for these externalities though, such as Pigovian taxes.