How to create macros?

[Flammensturm]

Hi, I‘m trying to create a macro to quickly switch between creative, spectator and survival mode. I am an absolute noob when it comes to macros. Can someone help me?

[Dyiing]

Minecraft has a gamemode switching feature, if you press f3 and f4 together.

To make an Aristois macro you'd need to assign each command (/gamemode X) to a key