Changing your ad preferences on social media platforms won't guarantee you'll never see these ads again, but it should, at least, reduce the frequency with which you see them.
To customize the ads you see on Google Search and YouTube, visit the Ad Center. You have the option to completely turn off personalized ads or see your recent ads and trending ad topics.
Clicking 'Customize Ads' on the sidebar will show even more topics and brands you can go through and deem relevant or otherwise. The 'Sensitive' panel lets you reduce the amount of sensitive content you see.
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