I went to my raid farm to start a raid and a raid started as normal. I looked inside the cages my two villagers were supposed to be in. Both villagers weren't there. The villagers could of despawned but the area where the villagers were held at still counted as a village. The raid went on normally and then I went to my house. I went to check if I had my other villagers in my villager trading hall. I looked around and there were no villagers. The place was guarded well by 7 iron golems so the villagers couldn't die (Underground). There was no cause of death. Before I notice that the villagers had disappeared, I was far enough for mobs that can despawn that were around my house or raid farm. I probably had around 20-25 villagers total so they couldn't have all died at once. It could probably be a chunk loading issue.