Why the number of external links and internal links has decreased

Hi, recently we noticed a worrying issue. When we entered the Google console, we were surprised to see the number for Internal links and External links
Unfortunately, we lost about 20,000 digits in each section, and this worries us about the site being penalized
We didn't do any spamming, we just produced exclusive content
The number of internal links was 170,000, which is now 150,000
but the nimber of external link was 77000 , wich is now 70000
please help me

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