I think "how to stop this" is the wrong objective. It's like "what I can do to achieve world peace tomorrow?". There is no answer to that. Yes, people promise to solve wars "in a day" but that does not work.

Depending on your situations different actions will have a different impact.

I do try to choose what I can to help. I am not obsessed with "the impact". If I buy a train ticket instead of a plane ticket - that can mean trains get more money. If I keep my phone for one more year, less waste is produced.

Would I help with the situation if I would buy a car consuming lots of gas, take international trips every years etc. (I could afford it, that's not the issue) ? I think not.

Can I say that my actions significantly influence the outcome? Definitely not, but we are 8 billions on this planet, so it all depends on averages. But if I don't do it (I am convinced there is an issue), how could I expect others to have my position...

You're right.

"What I can do to achieve world peace today"