speed and build is OK, no major issues there~
https://gtmetrix.com/reports/rareout.com/gqkKK4Qd
Add image scaling/minification and build will be fine.
SEO/CRO side of things is the issue.
You have VERY little written information on the site, anywhere.
Search engine's look at site's without written content as being 'spammy' so by adding some written content you'll soon find your site ranking.
https://www.seoptimer.com/rareout.com
A simple paragraph per item, below each item, will be enough to get going.
Homepage and Products/Store page, info per category.
Now add a blog, and start posting articles about each product/design.
Setup Postie plugin, setup email to post using it.
Set up social auto posting using a plugin like
https://babiato.tech/resources/social-auto-poster-wordpress-plugin.75/updates#resource-update-18802
Then repost blog post snippets to insta/FB/pintrest with images/linkbacks etc.
You now have an email to post articles system, that repost's to your social networks.
With the above in place, now you send an email to your site to do marketing for products.
Rinse and repeat posting 2x daily.
Simple marketing system.
Hope this helps~