No shit people are for fighting climate change in the abstract. But we’re not living in an abstract world, we are living in an actual one. One, where needs and desires compete. And consistently, other desires take priority over fighting climate change. There obviously isn’t as much support for actually combating climate change in the real world, with real consequences for real humans as you people assume.
You are drawing sweeping conclusions from very limited evidence. None of this shows a large part of the population voting for radical climate action, a few more people voting a little bit more centre left doesn’t mean much. It’s particularly telling that you’re trying to use the last EU election as evidence. Are you not aware that there was a right-ward shift in the European Parliament? The Greens in particular lost a lot. The EU continuing its course is far more indicative of technocratic governance over a democratic mandate.
You are deliberately obfuscating, to manufacture the appearance of support where there is too little. The issue is not that there is no climate action, the issue is that there is not enough of it. People, at least broadly, get the climate action that they vote for. Until climate swings elections in the way that the economy or migration does, the message to politicians will continue to be that people have other priorities.