In this video I show you How to Heal Zombie Villagers essentially Spawn villagers from nothing! All in survival mode!

You can use this method to get villagers in the sky it works so well!

Never waste your time and resources on a railway across your world again. Villagers are annoying to move around, so don't move them. Make new ones! Make these into a Minecraft Zombie Villager Converter. Craft the zombie villager cure!

This works both in Minecraft Java Edition and Minecraft Bedrock Edition... at least I'm pretty sure it does. I can't seem to get Bedrock to work right now, so we're going to have to trust the Minecraft Wiki.
You can use this to start a Minecraft Villager breeder anywhere in your world and have hundreds of villagers available for your use.