On Google spreadsheet. Every once in a while I'll type in the date 5/20 in the date column and expect it to change to 5/20/2025. But it doesn't. So I type 5/20/2025 and it changes to 5/20.

I have to go into format and change the date format. It's super annoying.

I've set the whole column to the format I want but it keeps reverting.

How do I fix this permanently?