A mod called Magic Carpet implements a flying carpet in Minecraft Bedrock Edish. Now you have the opportunity to fly it in MCBE. Just download the Magic Carpet mod and install it. Then go to MCPE in creative mode, spawn it on the ground – and you can use it!
Alas, you will not be able to fly the way you do in the creative mode of Minecraft on a tablet. The magic carpet can hover above the ground – and it does it pretty quickly in Minecraft PE. The mod works in the game on version 1.16. Have great flights!