I completely changed my lifestyle to reduce my part and put significant effort into it.
This is the source of your problem. Individual action will cost you a lot while accomplishing virtually nothing. Donating some small part of your income to green nonprofits has a greater impact, at a much lower cost to your quality of life.
A climate disaster is going to make us all make sacrifices we don't want to make eventually, no matter what you sacrifice now. If these are the final days of a healthy planet, don't deprive yourself while the billionaires are taking joyrides in their gigayachts. Just accept that this horror wasn't your fault, because if everyone lived with your likely very small footprint, this probably wouldn't be happening.