Iron Golems not spawning 1.16

I have set up 10 villagers in a world found the leader villager and then have tried to spawn iron golems for the past two hours and no golems have spawned? what am i doing wrong? Tried to do it both when I had game mode survival and creative. I have set up according to the new patches and requirements but not golems are spawning. I also tried just setting up room of villagers to see if iron golem will spawn and nothing happened as well. Update: I have uninstalled and reinstalled minecraft and it is still not working