Don't be down on yourself !!
I've fished for Crappie since the 1950's and still manage to get skunked (or nearly skunked), even with 60 some years of experience AND depth finders
In fact, fishing around here is so slow right now ... the last two fishing trips & the one I'm going on tomorrow will be for Bass (yeah, I know, that's a four letter word on a Crappie website but it still beats sitting in the recliner and dreaming about Crappie fishing)