Google keeps marking different pages as duplicates

My website has many pages like this:
mywebsite/company1/valuation
mywebsite/company2/valuation
mywebsite/company3/valuation
mywebsite/company4/valuation
...

These pages describe the valuation of each company.

These pages were never identical but initially, I included a few generic paragraphs like what is valuation, what is a valuation model, etc... in all the pages so some parts of these pages' content were identical.

Google marked many of these pages as duplicated (in Google Search...

Google keeps marking different pages as duplicates WordPress ...