The consumer end source of the problem comes from tires and the use of synthetic fabrics. As far as I know there is no effort at all to do anything about tires (using regular vulcanized rubber presumably would help). Synthetic fabrics, you actually can do something about. Stop buying them; your spandex pants are destroying the environment.
The other sources are pellets and coatings used industrially.
https://storyofstuff.org/wp-content/uploads/2017/02/IUCN-rep...