Redirect Loop, but only from search engines

First post. Sorry if I’m not up to par, still learning.

My site (https://www.HPD-FFF.com) works fine (I thought), but it turns out when visiting it from a search engine (or any web based link, see above) it displays the “This page has a redirect loop” error. I never noticed, as I go direct.

I don’t even know how to troubleshoot this. I assume it has to to with a plugin, but the issue just seems so odd.

Any ideas? Thanks in advance.