How to embed an element with a CSV?

Hello! When users login they are brought to the home dashboard with a few navigation links. I also have a “curated list” section (photo below).

Is it possible to embed the group elements with a CSV that they can download?

You can not download elements. You can only download data as Comma Separated Values

Is it possible to somehow embed a group or element with a CSV for users to download? If not, how would I enable users to download pre-made CSVs?

do they need to be csv or can they be xlsx?

I think what you are actually asking is can you download the data displayed in elements to a CSV, and for that, yes you can. Use the workflow action for download CSV.