Can I do this on bedrock? I play on an Xbox.

Yes, you can.

No. It has way less power which is why the 360 exists.

No, it doesn't. However, do you have an Xbox 360? if so, try there and then it should work, provided you downloaded it.

In the create new world menu, just scroll down until you find the "world type" area. Then click on where it says "infinite" and select "flat" from the drop down...

Making your Xbox a "home Xbox" allows you to share games, downloadable content, and even your Xbox Live Gold subscription with anyone else who signs in on your console.

The most useful solution to this problem is most likely replacing the console but, you can try rebooting the console first.