Speed up site loading via Google Page Speed Insight on CMS BITRIX

You want to speed up the loading of the site according to the recommendations of Google Page Speed Insight

Raise the mobile site load metrics:
Largest Contentful Paint (LCP)
First Input Delay (FID)
Cumulative Layout Shift (CLS)
First Contentful Paint (FCP)
Interaction to Next Paint (INP)
Time to First Byte (TTFB)
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Everything should be in the green zone.

The overall indicator should also be in the green zone.