My website is not opening properly on safari old version?
"Why is my website not functioning correctly on older versions of Safari? Is this problem related to the website itself or to the outdated Safari browser?"
[Edited by Moderator]
"Old" browsers may not work with "new" websites.
If Safari does not work with the websites you require, consider using Brave, or Firefox, and in that order:
https://www.mozilla.org/en-US/firefox/new/
... however, be advised that neither one of them will work on "old" operating systems.
For more precise recommendations you will need to identify which macOS version you are using: Find out which macOS your Mac is using - Apple Support