You can get a command block in your Minecraft Java or Bedrock world using cheats and a special chat command.

It uses repeating command blocks to define small “teleport regions” that detect a player’s hitbox and move them six blocks up using a relative tp command (for example, executing as a player ...

Players interested in automating their commands in Minecraft will have to use Command Blocks, but they’ll need to update their settings to add them into the game.