My enterties such as armour stands with armour, items and weapons on them despawned. my tamed animals such as multiple dogs, cats and 1 bird  despawned regardless of weather or not they had name tags. my passive non tameable animals eg cows sheep etc despawned.  My babys and 1 of my adult villages also despawned even though they had all the requirements for there area to be classified as a village. There were also disapearences with some of my signs and paintings This happened  randomly there was no specific thing that I did every time this happened and it happened multiple times.

The below picture is where my 4 armour stands with the armour, weapons and items were