Unable to connect to local worlds

When downloading a realm you stay downloading it for ever and never get the world

Im having issues in my realm

Character gets reset in world when you log out of local world

Advancements reset when your game crashes

World will not load

I logged on to Minecraft and enter into one of my worlds to find out that I no longer have all the texture packs and skins I bought

Villagers disappear when you open up a world

Villager does not reduce prices after being cured.