With regards to the point of making personal changes. Yes, of course that is one thing we could all do more of but action on climate change requires "I, We and Them'.
I being things we all do, reducing car use, living more energy efficiently, moving to green energy tariffs, etc.'
We being things the community can do, car pooling, shopping locally, growing food locally, sharing resources, buying less fast fashion, reducing, reusing and recycling etc.
Them however is where it really matters. Government redirecting funds into green energy, imposing strict tariffs, banning single use plastics, imposing congestion zones, improving green technologies, incentives for sustainable business, improving public transport infrastructure to provide a realistic alternative to car travel, putting pressure on other governments such as the USA.
And the government aren't doing that, it's all 'yes we will do this by 2045'. They have to do it now, it needs to happen NOW. And they aren't getting it. Head. Brick wall.