Amazing Plugin

This is the only plugin that i have seen a 100% score on page speed insights for desktop and between 97%-99% on mobile. When it comes to understanding how these things work to improve pages ect i know very little and as much as i read about inline CSS etc i still dont understand any of it lol, so in this area my knowledge is very weak. What i do know is this plugin is amazing, and I’ve tried similar plugins and i have never seen any noticeable improvements and i struggled to get desktop scores of 70% at best and mobile speeds increased slightly at best. Whatever this plugin did it has worked amazingly for my website. I have noticed even having a 100% stable score on google page speed i still have not passed the Core Web Vitals assessment. If anyone can share any tips to get a pass i would be grateful.
Thank you for a wonderful plugin