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.


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.