What’s your biggest save that you’ve accidentally deleted? I’ll go first

This happened like 10 mins ago and I still will never get over it. Weston-super-Mare FC in the 6th tier of English football chosen because of how close it is to my city (Bristol) played every game with no save scumming. By 2046 I have won 5 Prems, 6 FA Cups, 3 League Cups and a champions league in 2045. All of that has been put in the bin because of me overwriting the save without thinking. Will never get over it.