I have a Wordpress website using Salient theme, I have spent time optimising the homepage as much as possible by updating the UI and using various plugins. I am only achieving score of 61 for mobile performance score. I've pasted the score and diagnostics for mobile performance below. Are there any experts who can help me achieve a better result without effecting the other scores?
Mobile: Performance – 61 Accessibility – 100 Best Practices – 100 SEO – 100
Desktop: Performance – 97 Accessibility – 100 Best Practices – 100 SEO – 100
------------------------- Mobile performance diagnostics: ------------------------- - Largest Contentful Paint element 7,650 ms - Eliminate render-blocking resources Potential savings of 4,020 ms - Reduce unused CSS Potential savings of 116 KiB - Properly size images Potential savings of 40 KiB - Reduce unused JavaScript Potential savings of 48 KiB