I am feeling that a lot of acts which harm our ecosystem, cause global warming and cause damage to other beings too. What things can I do to minimize the harm from my side? I try not to throw rubbish on street but that is only thing I know. I don’t have recycling bins where I live.


Not eating meat is probably the biggest impact you can have, followed by using public transportation whenever possible.
Grow indigenous pollinator-friendly plants. Minimize your trash output as much as you can. Vote against expanding the military budget if youre in the US.
Fr tho going vegetarian/vegan is huge on a personal scale, large-scale farming is tremendously harmful.
If for some reason the challenge of avoiding meat entirely threatens to get you abandoning your principles entirely, the other option is to just vastly reduce your meat consumption. We get used to giant portions with each meal; but there’s many ways just a little bit of meat can greatly enhance the flavor of a dish.
Still, worth looking at the many forms of meatless cooking too.
I doubt it
You’re welcome to review and refute the science
https://www.theguardian.com/environment/2018/may/31/avoiding-meat-and-dairy-is-single-biggest-way-to-reduce-your-impact-on-earth
first, the paper does not make such a claim. that’s fluff provided by one of the authors. second, that paper has dubious methodology, so even its conclusions should not be trusted.
edit:
… but if you do, I’ll just downvote instead of dealing with the fact that the evidence is insufficient.