Well, your post didn't give us new ideas either.
Govts try to change....bit by bit. Closing down nuclear plants eg,, no plastic bags which will not get rotten in hundred years, going for EV cars, or better mass public transport, new ways to create energy
However, that's not for free. It costs huge amounts of money and efforts for transition to electric power.
To convince citizens is the biggest task. If people are not convinced they won't follow.