To find your specific shortcut:
Here are some tips and tricks to help you get the most out of the redo feature in IntelliJ: redo in intellij
The "Redo" action relies on IntelliJ's internal action stack. This stack is usually cleared when you close the project or restart the IDE. If you realize you deleted a block of code yesterday and need to "Redo" it, the standard shortcut won't help. To find your specific shortcut: Here are some
If you don't like the default, you can change it to whatever fits your muscle memory: redo in intellij