The Scientific Method

The scientific method does not involve making up a story and finding facts to prove it is true.
The scientific method involves making up a story and trying find evidence that it is wrong.
If you can't prove yourself wrong, you ask an expert to have a look and see - this is called "peer review". If the expert can't find the flaw, you publish the story in a respected scientific journal. This is considered an invitation to anyone in the world to try and tear down the story by giving a supportable reason why it doesn't match reality.
If no-one can prove you wrong then the story becomes accepted. When very many people, using different techniques and styles find the same story explains a lot of things, then a consensus is reached and it becomes as generally accepted Theory.
This does not mean that it will not be dis-proven in future, or that more details will not be added over time.
So far no-one has come up with evidence that anthropogenic climate change is wrong. It is just a story but it is one that matches reality as closely as we can find at this time.