I will show you how breed villagers in Minecraft. First you gonna do is locate two villages. In this example, I've just spawned some for you, but you can usually find villages naturally. Once you've found them, ensure you have three beds placed close to each other; they can be any color.
For villagers to start breeding, each of them needs to carry at least 12 carrots, 12 potatoes, or three loaves of bread in their inventory. In my case, I've prepared two sets of 12 carrots. Drop the carrots near the villagers, and you'll notice that they pick them up. They will also gather the food for the other villager nearby. If they don't pick up the food, simply step away for a moment, and they should eventually collect it.
After they've picked up the food, walk away and the villagers will initiate the breeding process, indicated by heart particles. This takes about 10 seconds or so. Keep watching, and soon a baby villager will appear. I hope this video was helpful, goodbye.