Hello, I am kindly asking for your help today. I don't know for how long it has been like this, but today I wanted to make a 3D transtion in After Effects 2021 and I noticed the 3D toggle was not there.
as you can see, it is not there. Its suppose to look like thisI have already tried toggle switches and it will not work
Sorry, I couldn't understand your questions completely. In the screenshot, I can see that the 3D switch is available for the layer 3 and 4. Layer 1 & 2 are camera and light and they are 3D (sort of) by default.
Try enabling both icons at the bottom left corner of the timeline. This will turn on both the switches column and the modes column. The first icon, the one with the little stack of squares, is the switch for the Switches column, the second icon, the one with the intersecting circle and square, is the Modes column switch. The Switches column has the 3D switch at the end of the list. Your first partial screenshot only shows the Modes and the Parent/Link columns.
You can also use F4 to cycle through the Switches and Modes column.
6 minutes in the Learn workspace will teach you about the UI. If you are new, it's a good idea.