Hi,

I've checked your site, if you want to improve the page speed score on the mobile, please follow these steps:

1. Go to Appearance → Customize → Speed Optimization → General & Lazyload: check Delay all images loading in the first screen to optimize LCP value,

2. Convert all the current images to webp format by installing & use the Imagify plugin here: https://wordpress.org/plugins/imagify/

Regards,
PenciDesign.