Everyone feels this way, or at least most people. If there was a sane green party in your country, mine or elsewhere it will get a majority easily (though would have to fight disinformation with tooth and nail).
I’ve got kids, and I felt like you. Felt that we’re screwing their world to a tipping point and leaving them in a boring mad max-like situation.
But at the same time, the number of brilliant scientists, engineers and common people that are trying their best helping us out of this mess are the largest ever.
Maybe we won’t apply enough change that it matters, but while we’re at it, we should try our best. And I’m not talking about the personal responsibility bullshit companies want us to believe, but social action.
Do you want change? Look for local groups that promote it and volunteer.