The problem with the speed of the site

Hi everyone,

This is my website speed in PageSpeed Insights after fixing photo problems. Now I want to fix the problem with js code, but I did not know how I can fix it. I bought the template and I do not know how can I Reduce unused JavaScript because I did not find a place for changing and remove js code.

I appreciate any help on this. Thanks!

Here is my site Read-Only: LINK
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