Is humanity going to destroy this planet?
No. I think that given adversity, humans realise when they're on the tipping point of dying and they wake up and sort it out. They did it with the ozone layer problem in the 1980s, and we see that they did it (finally) with covid-19. So I reckon once the planet gets bad enough, and they have to put dykes up to protect coastal cities from rising sea levels, they will wake up. Also, I think the air pollution issue certainly is from transport, there were interesting air pollution satellite images from China under covid, all showed massive decreases. Once corporate sector allows everyone to work from home, there's no need to travel up and down. This thing of driving up and down will stop, it will go down to just logistics/goods transport rather than school, offices, etc. We are going to go back to the pre-industrial work style period of cottage industry with people working from home and selling crafts, art, services, etc. stuff online.