Hi,
I just checked the source code of your website that Google shows as cached version.
There, you can find the following HTML markup for your article's main title (<h1>). I assume that ezoic, which is an ad network, is injecting an advertisement directly to your title, at least for the AMP version of your page.
<h1 class="amp-post-title"><span id="ezoic-pub-ad-placeholder-608" class="ezoic-adpicker-ad"></span><span data-style='display:block !important;float:none;margin-bottom:15px !important;margin-left:0px !important;margin-right:0px !important;margin-top:15px !important;min-height:100px;text-align:center !important;' class='ezoic-ad adtester-container adtester-container-608' data-ez-name='michaelsaves_com-'><div amp-access="e608 = 1" amp-access-hide><amp-ad width=320 height=100 data-block-on-consent type="ezoic" json='{"extras":{"SubPositionId":608,"AdSize":"320x100","TemplateName":"pub_site_mobile_amp","TemplateId":167,"Flag":true,"Url":"https://michaelsaves.com/save-money/lens-com-review/amp/"}}'></amp-ad></div></span><span data-style='display:block !important;float:none;margin-bottom:15px !important;margin-left:0px !important;margin-right:0px !important;margin-top:15px !important;min-height:50px;text-align:center !important;' class='ezoic-ad adtester-container adtester-container-608' data-ez-name='michaelsaves_com-'><div amp-access="i608 = 1" amp-access-hide><amp-ad width=320 height=50 data-block-on-consent type="ezoic" json='{"extras":{"SubPositionId":608,"AdSize":"320x50","TemplateName":"pub_site_mobile_amp","TemplateId":167,"Flag":true,"Url":"https://michaelsaves.com/save-money/lens-com-review/amp/"}}'></amp-ad></div></span>Lens.com Review: How I Saved 75% on Contact Lenses</h1> </div>
Looks like thats the reason why Google is adding "Ad" in front of your title in it's search results.