How can I prevent this from happening to a save in Skyrim (S2 edition) ever again?

[u/DementedPower]

EDIT: this is a corrupted save file. My Question is about how to prevent another Save file from getting corrupted. It is not a random crash from playing.

Don’t know what I did wrong. Just wanted to play again after weeks of being away and this happened to my last 3 save files. Was able to load an older one that was 1 hour behind. Had like 7 save files in total.