Getting Photos off of a potentially corrupted card?

Hi all! Yesterday, I was importing photos from my SD card to my phone using an SD card reader and Lightroom when about half way through, my phone crashed for some reason. Half of the pictures imported correctly to Lightroom although the remaining images did not. Now, whenever I plug the SD card into the reader, it does not show up, although the SD card still stores and displays photos on my camera. I was wondering if my phone powering off caused my card to corrupt, and If there is any way to import the photos into Lightroom as RAW’s. I’ve tried Cannon’s camera connect app but with all the pictures i’d like to import, it would take far too long.

Also, maybe the way I import photos is not the most optimal so if there is a better/more efficient way I would really appreciate it!