It depends on the theme you are using, mostly. If it offers a widget position there, then that’s probably the easiest solution. I see you use visual composer there, but I’m not sure if that allows editing the archive page templates.
Otherwise it’s very likely that it’s not possible without editing the theme files directly. You can either ask the theme author, or if you want I can check that for you. In that case, I will need temporary FTP and log-in details, as I will have to look at the theme files directly. You can provide that by editing your initial post.Best,
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