I am not a denier, though I am a skeptic on the severity of the issue. But anyway, it doesn't even matter regardless.
It is literally impossible to stop the world from using oil. Literally impossible. We WILL, as a human race, burn/use every last drop until it is gone. That is going to happen, whether you like it or not, whether the UN makes a passionate speech about it or not.
We have billions of people, that depends on their LITERAL SURVIVAL on oil and gasoline.... Billions. We have entire countries economies, completely dependent on it's production and or consumption. You will not stop the entire world from consuming oil; Russia, China, The Middle East, hell the entirety of Asia and Africa, venezuela , brazil... Never.
It is 100% idiotic to think so. All you are doing, is rising the cost of living for no reason whatsoever... and sometimes murdering people due to international energy policies(Poor and desperate people have no voice in this, the people who are impacted by oil restrictions are the poor and suffering.... not the privileged)
If you want to help save the environment, which I do.... I actually care a lot about the environment., my first major in college was environmental science, until I switched to Physics.... Don't put a cent or second of your time on this issue. You need to pick your battles, and you need to know when you have to adapt to change.
Pesticides, toxic runoff, plastic trash, trash, deforestation, poaching, desertification, animal conservation, are all the things you should be worried about..... and the first one, pesticides, is arguably the biggest most pressing concern right now. In the US... we have almost literally wiped out 70% of the insect life in a decade or two. Honey-bees are going extinct, Monarchs are going extinct, the list is too big to go on.
The ONLY hope you have for climate change.... is technology. Ditch, every other effort, it is a complete waste of time. Until a easier and significantly cheaper alternative to fossil fuels comes that makes fossil fuels obsolete(And it does not exists yet), it is going to be the status quo. Eventually and inevitably, there will be a time where that is true. Why? because eventually we are going to burn enough oil to the point where the oil reserves run price and prices start to increase to where an alternate can come through.
