Minecraft Preview missing from available previews

@ dittybiddy,my post wasn't aimed at you but at ZonatedBeret391

When the ARK preview is made available it is available to everyone.

Game previews are separate from the preview program.

Hello, George G. I'm Arturo, and I'll be glad to provide assistance with your inquiry today.

I'm sorry to say, but Minecraft Preview is not available for download on that platform.

“Minecraft Preview is available on Xbox, Windows 10/11, and iOS devices”

Reference link:
https://www.minecraft.net/en-us/article/minecraft-preview-1-20-0-20

I know this is not the kind of answer you were expecting, but your understanding is appreciated.

Regards,

Arturo.

Change the Insider preview ring your console is enrolled in.

According to the link provided above the last update for General Availability was in July.

If your console is completely turned off and power removed, your console will miss the regular system updates for the preview, usually about 600-700 MB. If you miss a preview update and another is released the complete OS system, about 4.5 GB, will need to be downloaded to ensure the console has the latest update for that preview ring.

I'm in Alpha Skip Ahead preview and manually do at least 3 updates a week.

The other preview rings have less updates each week and the Omega ring has the least.

If you don't like the constant updates to the System OS it may be to your advantage to unenroll the console from the Insiders program.

Hi, I suppose you are in the Preview Program, you must sign out from the Minecraft beta from the Preview App, than delete and redownload Minecraft so you can switch back to the stable version.

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today Shooty

Although it is possible to sync worlds from Bedrock to Minecraft Preview, there's no way to transfer the world from Minecraft preview to your Minecraft Bedrock Edition as Previews are only beta

Hope it helps, if you have further questions feel free to ask, greetings from another Microsoft user