If you feel there is a problem with unsubstantiated claims on the page, please edit the page and add “citation needed” tags to those claims. Here’s how to add them, https://en.m.wikipedia.org/wiki/Wikipedia:Citation_needed

If the overall article needs more citations then you can edit the page and apply the “more citations needed” tag, https://en.m.wikipedia.org/wiki/Template:More_citations_need...

Here’s an overview of Wikipedia’s approach to site reliability. Lots of tools to help flag content that needs verification and there are lists of volunteer opportunities to clean up content that had been flagged. Check it out, https://en.m.wikipedia.org/wiki/Wikipedia:WikiProject_Reliab....