If I understand your comment correctly you are implying that individual actions matter little because it’s only on a large, collective scale that change can be implemented? My counter to that is you can do both. Personal responsibility and collective responsibility are not mutually exclusive. Plus I’d argue you’re more likely to foster collective responsibility from the actions of individuals, than you are waiting for a group to spontaneously decide to act as a whole.

Finally I’d also point out that there are degrees of change. My picking up litter on my daily walk is not going to make the world a better place, but it will make my neighbourhood a better place, and that’s valuable to. And in doing so it may inspire others to do the same, and from there you generate that collective responsibility you mention.