Hi @SBK,
Thank you for posting in this community.
The "Like" button, along with comments and views (Social Bar), is indeed a default feature on SharePoint Online site pages. However, there is no built-in "Dislike" button available in SharePoint.
The Social Bar is a new feature in SharePoint Online modern pages that lets users like, comment, and see the number of views. Social bars are usually added to a page automatically after we publish it, and we can't edit it either. Therefore, even if we create a custom social bar, we cannot interfere with this automatic behavior to use our custom social bar.
We are always looking for ways to improve SharePoint, and your feedback and suggestions are very valuable.
We suggest that you can make suggestions on this SharePoint Feedback portal that SharePoint Online should have more flexible configurations for the Social Bar. Your contribution will be highly appreciated.
Good luck!
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