Tips on optimizing my SEO? (anchor texts and javascript)

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Hi, so I've been working on fixing my SEO. It's looking much better than it did before on seobility's checker.
I'm stumped on what to do to fix the link structure, as detailed in my report here:

I'm not sure what anchor texts it's referring to or the 4 links that don't have anchor text.

Also, is there a way I can reduce the amount of javascript files too? Would it be safe to put them all in the theme.js file?