Why can't I import photos directly from my iPhone to my MacBook?

When I plug my iPhone 11 into my new MacBook Pro (14-inch, 2021, M1 Pro), I cannot import photos directly from the phone onto Photos on my computer. A very few random photos appear under "new photos" in Photos, but I have hundreds of other photos that don't appear. Why can't I do this very simple task? I had the same problem with this same iPhone and a much older MacBook and I figured it was just because the computer was so old, but the problem persists in this new MacBook.