Question about photos and external drives

So I currently have a 12.9in iPad Pro and a Samsung t5 ssd. I was trying to transfer photos already organized into folders into the photos app. Currently the only way to do this is to select all the photos in files, click share, and save as images. The only problem with this is the hundreds of photos I’m transferring makes the app crash. Is there anyway I can transfer photos reliably from an external drive to a photo album? Thanks.
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