The trick is to only do that for your very last item. If able to do extra walking, just pass busy spots by and check others on your list

Legitimately blocked aisle? Be patient. In severe cases, go back the way you came

Aisle blocked by some bullshit? Give a loud, glib "'Xcuse me!" from your diaphragm. They'll notice.

Last item you need and somebody's standing in front of it for longer than a minute? That's kind of on them. Polite, outside-voiced "Pardon."