Although the following article mentions iOS (which I don't use), I learned some things about reopening tabs in MacOS Sierra. For me, it's useful stuff. How to reopen tabs in Safari for iOS 10 and macOS Sierra

Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365