Deleted 1.21 survival World

Me (DaArrow1) and my brother with account name L3ftToR1ght had a survival world. My internet was lagging a bit and my computer was very hot so i shut it down and re-opened Minecraft only to see that our 50 hour survival world no longer existed. it was seed: 418020111 

and we had a base in a village at cords  7100 , -54 , 4100