Samsung Galaxy A11

I have an emergency and have to use my A11 for a while. Problem is, I only have 31G of storage left out of 32, on the phone. I think telegram ate up the rest of it.
Is there any way to free up some of that space without doing a factory reset?
There is not that much taken up by other app files.
TYIA for any help!

Attempting to pir a Nikon Z6 II camera to a Sansung A11 phone. I start the pairing process, the phone sees the csamera but whenI tap on the phone to add it as an available device I get a message an app is neded to use this device. It doesn't tell me what app is needed. The messge disappears, I tap on the device shown on the phone as an available device and I get a meesage on the camera unable to connect. I have five other bluetooth devices paired but none them are connected when I try to pair the camera.

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