Mastering filters

Hi everyone, i’m starting with make
i intend to scrap specific url within post of a wordpress website
so far i’ve succeed to retrieve the html content and isolate the urls. I want to filter them and delete every wordpress urls to keep only the outgoing links in the content of a post. I’ve tried many methods (exclusion of wordpress url, inclusion of the only matching patterns urls) i keep of getting bad results. Any clue on how i can filter efficiently this list of urls?

thanks
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