Sd card 128gb doesn't work

Hello, i need some help, I formatted my 128 sd card, i use the sd for video with a camera, but
instead of there being folders there is an application that won’t open, i don’t know why, i try to formatted my sd card also inside a camera but it’s the same problem, the computer tells me that the memory is busy but I can’t access the folders with video and photo files.

It sounds like there might be a partition or formatting issue on your SD card. You can look for the file system. It should be something like FAT32 or exFAT for SD cards, or check for the hidden files.
Check for viruses and malware too as this could be a reason. Or, you will need to format the card and use recovery software to attempt to recover your videos and photos before attempting to format again. Stellar Photo Recovery is the best tool for recovering photos from Sandisk SD card.