How do I move my images and other files from internal storage to sd card?

I have a Samsung Galaxy s7 with Android nougat 7.0 and every YouTube video or forum instruction I've found so far is inaccurate. When I select all the photos, there's no "move to" option, there's no sd card "format as internal" option, no move vs copy options in the gallery. Every solution I've found so far does not exist since I guess the newest software update. Transferring apps was easy, though, thanks a bunch Android.

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