How to implement Google page speed recommendations for mobile and desktop website

I had smushed my images using WP Smush Pro and Ewww Image Opitimizer.

According to Google, my mobile page speed is 73 over 100 and my desktop page speed is 91 over 100. Google has alerted on the shortfalls to be fixed and recommended actions required to correct the identified problems in my mobile and desktop webpages as per attached files.

Can help to resolve the highlighted problems and fixed the actions required for improving mobile and desktop page speeds as recommended by Google as per attached files please?

Thanks and regards.