React-Dom unused javascript

A benchmark on https://pagespeed.web.dev/analysis/https-www-quranplayermp3-com-reciter-abu-bakr-al-shatri/5bo9yilkyp?form_factor=desktop tells me that I need to reduce unused javascript. I used react bundle analyzer to find that biggest js chunk, and turns out it is actually the react-dom package. How can I fix that?