Just gotta put yer time in man. You could be fishing in the right spot, wrong depth. You could be fishing the right depth at the wrong spot. Or you could be at the right spot, at the right depth, with a poor presentation. Or you could have a bad haircut. Or you could just have it all wrong. No way to tell for sure without being there, but there are fish in the river. There are fish caught at that particular fishing hole.
Just gotta find that shipping lane. Keep fishing. Fish some more. And while you are doing it, keep track of what does not work for ya, and try another combo.
Whatever you do, keep fishin'. I havent checked, but I hear the nook-numbers are fallin at Bonny.