I am experiencing low indexing issues on our website from several months. Google is not indexing the website fast enough. The changes we make take 1 or 2 months to get reflect in search engine. It's a big website we have done everything: updating sitemap/break in many sitemaps and tried to fetch those URL's but got nothing it showed last cached a month ago. How to make Google index out site more often?

Few pages I am mentioning https://www.eworldtrade.com/ https://www.eworldtrade.com/importers/mushroom-buyer/

Also, I don't see the drop down on this url which mentions cache in every url in search engine

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