After switching my keyboard around I noticed that the vs code does not trigger code suggestions after pressing
ctrl+space (Image 2, Intellisense not working).
Go to System Preferences -> Keyboard -> Shortcuts uncheck the “Select the previous input source” (Image 3, Unselect previous input source).
This will fix the issue.
Open up the Visual Studio code and open keybindings (On mac
cmd+k + cmd+s) now search for trigger (Image 1). Here you can change the shortcut to your liking.