I'm sure the answer is a "haha no you're dumb" but i had like a dozen tabs open on my phone, needed to clear space, so i was doing some things to decrease the "other" stuff, including "clear history and website data" and it closed all my tabs. Yes, it warned me it was doing so, but I was too hasty to read the warning. Any hope? Only reason I thought it was possible is because with iCloud, i could see the open tabs on my phone in the 'icloud' on my Mac's safari window. And maybe they were stored there...?