Lass es mich noch einmal versuchen. Was ist los mit ihr?

I’ve had the same issue over and over again until I gave up. My problem was low humidity but I was too lazy to buy a humidifier :/

Too much sodium, chlorine, and/or fluoride in the water? Calatheas are sensitive to all three, and results in them needing reverse osmosis water in my area.

Is this a single pot? Calatheas need “friends”. Surround it with other plants. It helps with the humidity. I have been a member of plant groups and have grown calatheas. Give it a try.