Hi there,
i ran a page speed test on the site here for reference:
https://pagespeed.web.dev/report?url=https%3A%2F%2Fwww.parikshapoint.com%2F
The major issue being flagged is related to Javascripts running on the site:
Reduce unused JavaScript
Reduce the impact of third-party code
Minimize main-thread work
Reduce JavaScript execution time
All of them point to the 3rd party scripts being a problem. And most of them are related to adverts.
You should use a Plugin like Flying Scripts or PerfMatters to defer the loading of those scripts.
LCP can be improved by NOT lazy loading your featured images – this topic explains:
https://generatepress.com/forums/topic/css-class-for-image-lazy-loading-exclusion/#post-2039856