If I miss a fish, first thing I do is look at the hook. At times the size may need to be adjusted, but always you have to make sure it is sharp!
I found this on the interwebs. It will help you get it right!
https://www.instagram.com/p/CAYg-rOAJm-/?utm_source=ig_web_copy_link
You can tell when I have been sharpening hooks, my thumbs and thumbnails look like pin cushions.
Have a great weekend! FISH ON!