Wrong sub-categories in Google search under my website title

Hey guys,

I have my portfolio website.

But when I type its name in the address bar, a bunch of categories pop up under the website name - screenshot attached (maybe these are the names of pages from the website template I used originally).

How can I delete them completely? Or how can I name them correctly so that when I click on them, the corresponding section of the site opens?

Thanks!

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