Cant find "custom animation" in version:

I’m trying to make a presentation in Impress presentation, Version:
However I can’t find the custom animation pane when trying to animate the textboxes.
I would be very thankful if someone could help me.

Try the safe mode.

If the error remains not constant, reset your user profile.

Once you have added the object using the (+) sign, you must then select it in the Animations sidebar.

Help - Animating Objects in Presentation Slides

But when I mark the textbox and go to the animation toolbar there is no option to change the kategorin.

Please do not post an answer if it is not a solution to your initial question. Thank you.

Try to read please: Ask/Getting Started - The Document Foundation Wiki