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I ordered a repair kit for my switch to remove the shell to replace the sd card reader but the crappy screw driver stripped my screws and now they won’t come out, what can I do to get them out

You can use a rubber band stick it in and try to get the screw out. However this has never worked for me (i might just be bad at it) What I see on the internet is screwdrivers that are made to extract stripped screws. like these from ifixit, Precision Screw Extractor Set make sure to check the size to see if it fits the screw