Use natural fiber clothing only, no polyester, just cotton or whatever other natural fibers. Try to use less packaged food. But one of the major sources of microplastics is tire wear from vehicles, not sure what can be done about from a personal level other than not drive, which, I mean, who’s really gonna do that?
Presuming the aborted baby isn’t a human… which is just wishful thinking by anyone who prefers convenience over morality.