hi @dalire ,
You’ll have to open the camera and see if you can gently remove it from the card reader without damaging anything.
Here’s a link to the ifixit [guide|71914] guide.
It is useful as it shows how to open the camera so that access to the card reader is possible.
Be aware that the card reader has an internal spring latch that operates to hold the card in when it is inserted correctly so be careful that it is not damaged when you try to remove the card, otherwise you’ll have to replace the card reader.