Questions about Prusa Prusament PETG Jet Black 1k

I think it's great that you have this filament in your range! I threw orange into my shopping basket at the weekend. Now it says that it is no longer available! Will you include it in the range again?

I just unpacked the filament and wanted to use it for a print straight away, but the parts are extremely brittle. fine things break directly when a small amount of force is applied. Does anyone have any idea what the problem is? I've already played with the temperature and printed more slowly, let it cool down longer, but it's always so brittle at the end