I am still struggling with improving the Core Web vitals of my pages. 
Author: Gabriel H.Despite the latest improvments I am still struggling to improve the Core web vitals that have an important impact on Google SEO performance.
In particular in the PERFORMANCE
1. Reduce JavaScript execution time ==> 3.9 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
2.Minimise main-thread work ==> 7.3s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
and BEST PRACTICES.
1.Uses deprecated APIs1 warning found
Google CDN cdnUnloadHandler…rs=ABjfnFVms…/m=gmeviewer_base:203:639(www.gstatic.com)
2. Browser errors were logged to the console
/cart/x5cart.php?action=alignwl:1:0(fotografico.endelevu-safari.tours)Failed to load resource: the server responded with a status of 403 (Forbidden)
The webpage is the following
https://fotografico.endelevu-safari.tours/nyerere-ruaha-safari-fotografico-tanzania.php
I believe that I have no direct possibilities to intervene being part of the webpage coding.
Or not?
Best regards
Gabriel
An improvement would of course be good, but don't stress if it's not that good yet.
Maybe the moderators, other users and Incomedia employees can give tips on this.
I found this information in German when searching Google on the topic.
----- Translated with Google -----
Understanding and Optimizing Core Web Vitals [Guide]
...
Importance of Optimization: Despite the unclear impact of Core Web Vitals on SEO ranking, optimizing them is beneficial as it improves page speed and user experience, which in turn positively influences bounce rate, dwell time, and conversion rate.
...
Amazing result of a study on the Core Web Vitals
The results of a study by Searchmetrics are all the more astonishing. Two million URLs that rank in the top 20 Google results for Germany, USA and Great Britain were examined and their Core Web Vitals results were analyzed. This study found that, incredibly, only 4% of websites score well on all 3 Core Web Vitals. 96% did not.
>> https://www.ithelps-digital.com/de/blog/suchmaschinenoptimierung/core-web-vitals (German)
-----