How do I change my start page in Safari iOS 15?
Customize your start page
Scroll to the bottom of the page, then tap Edit. Choose the options you want to appear on your start page: Use Start Page on All Devices: Keep your settings and preferences updated across all Apple devices where you're signed in with your Apple ID.
How do I customize Safari on IPAD iOS 15?
Open Safari and stay on the start page or open a new tab. Scroll down and tap Edit. Toggle off the options you do not want on the Customize Start Page. You may also rearrange the order by touching the three lines icon and dragging it up or down.