There are lots of really cool things you can do in Obsidian using keyboard shortcuts. One of those is moving the current line up or down a line.

To set up this keyboard shortcut, go to Settings → Hotkeys and search for Move Line Up or Move Line Down. Click the Star button and select the keyboard shortcut you want to assign to the action.
If you want more quick tips, templates, and resources, check out my free Practical PKM Starter Vault.