#AppleNotes
I like Apple Notes, it's easy to use, fast, and robust for note taking. Sometimes, you may make mistakes when typing, there are some steps to help you undo changes on all Apple devices.
On iPhone or iPad
Since the iPad version has a similar layout and features as the iPhone version, we use the iPhone version as an example, they apply to the iPad version as well.
Undo button
Tap on the undo arrow button to undo the last change:

Tap the right redo button to redo the change if needed.
Finger gestures
Double-tap with 3 fingers anywhere on the screen.

You'll see this little Undo popup once you succeed.
You can also undo the last change by swiping left with 3 fingers:

Similarly, you can also swipe right with 3 fingers to redo the last change.
Besides, you can trigger this popup by taping with 3 fingers, which you can see Undo, Cut, Paste, Copy, and Redo actions.

⌘ + Z
If you have connected a keyboard to your iPad or iPhone, press ⌘ + Z on your keyboard to undo the last change, and ⌘ + Shift + Z to redo the last change.
On Mac
There are a few ways to undo changes on your MacBook, iMac, Mac Mini, or Mac Pro.
⌘ + Z
Press ⌘ + Z on your keyboard to undo the last change, and ⌘ + Shift + Z to redo the last change.
Edit menu
Click on Edit in the menu bar, then click on Undo Typing to undo the last change:

On iCloud.com
Apple Notes is accessible on a web browser as well, you can sign in to iCloud.com.
⌘ + Z
Similar to the Mac version, you can press ⌘ + Z (Mac) or Ctrl + Z(Windows/Linux) on your keyboard to undo the last change, and ⌘ + Shift + Z(Mac) or Ctrl + Shift + Z(Windows/Linux) to redo the last change.
Final thoughts
There are a few ways to undo changes in Apple Notes depending on your device. My favorite one is ⌘ + Z, it's faster and this is a common action supported by almost all apps.
I hope this tutorial helps you use Apple Notes effectively.
