Pagespeed score

Problem:

Site speed score giữa mobile và desktop khác nhau nhiều

Quick reply

When you run a website URL through PageSpeed Insights, it’s most likely that the mobile PageSpeed scores were lower than the desktop scores.
You can learn more about why there is a difference here: 
https://www.ezoic.com/mobile-and-desktop-page-speed-scores-different/
If you scroll down to the diagnostic section, you have pretty high times for JavaScript execution times.
https://i.imgur.com/I0IRYEj.png
And you can base on those opportunities to improve your mobile speed score.