Villagers/minecarts/armor stands/animals/named zombies constantly despawning

Villagers/minecarts/armor stands/animals/named zombies constantly despawning. I have set up a villager breeder, which funnels into a minecart track and takes them to the trading hall. My two villagers that breed have despawned 4/5 times now in the last few months, but I have been able to find/cure more and keep them breeding. Hopped on last night and not only were they gone, but my trading hall and all 18 villagers had despawned. My named zombie in a minecart, Rick Moranis, that is used to infect my villagers has now despawned twice. RIP Rick Moranis III. I have also had random despawns with my animals in their fenced in locations, armor stands, minecarts in autosmelter/gold farm/pumpkin/watermelon farm, will randomly despawn nearly every 3rd time I log on. Please please please help. This makes the game unplayable. All these despawns span across over 300 blocks so doesn't seem like a chunk issue . I have tried closing out the game in different ways. Nothing seems to work. I need helpppppp