Because toilet paper has the characteristics of "discard when used up", environmentalists have long criticized and advocated people to re-use handkerchiefs, but in fact toilet paper was once popular with people because it is more convenient and faster than handkerchiefs. In the age of pursuit of speed, people have become accustomed to this characteristic of toilet paper. What we can do is to take extra care of the environment, participate in afforestation, and improve manufacturing processes to reduce energy and raw material waste.
On the other hand, in most places in the world, it is forbidden to discard toilet paper in public toilets. You should develop a good habit of throwing discarded toilet paper into the trash can in the public toilet.