You may seek information on how to clear Safari of any/all home pages; and then start anew.
{..I've no 'homepages' set for Safari -or any other browsers- in macOS/OSX..}
• Safari User Guide - [Table -of- Contents] - Apple Support
https://support.apple.com/guide/safari/toc
• Change your homepage in Safari - Apple Support
https://support.apple.com/guide/safari/change-your-homepage-ibrw1020/mac
• Clear your browsing history in Safari on Mac - Apple Support
https://support.apple.com/guide/safari/clear-your-browsing-history-sfri47acf5d6/14.0/mac/11.0
A default 'home page' may have been to an Apple site, with mac or OS information.
(I do not recollect -if anything- in my browser was set, when my Macs were new.)
Usually I make sure 'nothing would launch by default' when opening a browser.
Take care & good luck!
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