Why Aren’t My Updated Meta Descriptions Showing in Google SERP

I’m encountering a problem with my website, https://costcofoodcourtmenu.com/, where updated meta descriptions for some pages are not appearing in Google SERPs, even after weeks of being updated. The meta descriptions are correctly set using Rank Math and are visible in the page source. To address this, I’ve cleared the website cache, ensured all affected pages are indexed in Google Search Console, manually submitted the URLs for re-crawling, and verified that the updated meta descriptions are live on the website.

For example, on one page, I updated the description to “Explore Costco’s Food Court Menu with detailed insights on prices, nutrition, and secret menu hacks.” However, Google is still displaying the old description, “Discover Costco Food Court items, deals, and more.” I’m wondering if this discrepancy could be due to Rank Math, Google’s algorithm overriding my meta description, or another technical issue. Are there additional steps I can take to resolve this, such as improving the relevance of my meta descriptions to match user search intent? Any advice would be highly appreciated.