Post tags showing up as separate pages

Hello everyone, I'm running into a problem on my website, I have two post archive pages for different types of posts, for one of them the posts are tagged and have filters based on those tags.

A while ago I ran an SEO audit on the website and there are broken links in the website and the URLs are all "website.com/tag/example", clicking on this link takes you to a version of the OTHER posts page (the one without any tags) but with lorem ipsum in it instead of the actual page that's on the website.

I'm not sure how to solve this problem as those tags and the broken page are showing up on Google search results as well.

I want to disable the tags from being separate pages and remove the broken lorem ipsum page, what can I do?

Thank you in advance.