So I accidentally deleted all my data for Minecraft.

Hi, I hope you're doing great out there. I am an Independent advisor and I am here to help you in regard to your concern.

For cases like this what we initially need to do is to quit the game and perform power cycle in that way once you launch the game your in-game data will just re-sync.

Kindly quit the game and follow the steps below before you re-launch the game.

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POWERCYCLE CONSOLE​​​

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1. Turn off your console by holding the Xbox button on the front of the console for approximately 10 seconds. The console will turn off. ​​​

2. Turn your console back on by pressing the Xbox button on the console or the Xbox button on your controller. ​​​

If that didn't work, I apologize but recovering the data will no longer be possible.

I have a different email address that I use to purchase Minecraft. I accidentally deleted Microsoft and all of my data disappeared.

That happened to me too. I accidentally deleted all of the data on my Xbox and I can't get it back.

Just like PhD said, if you deleted your profile and items then the data that is linked to your gamertag will have been completely deleted. Go to game saves in your settings, then find Minecraft. Go through that to see if you have any game saves and data
linked to your gamertag, and if you don't then it's probably been accidentally deleted when you deleted your profile.

I accidentally deleted a minecraft world on my switch, is there any way to get it back?

Sadly no, once a wold is deleted its gone. I wish there was a wag to get it back but as of right now there isn’t. I myself have accidentally deleted a few worlds.