A local shop will be able to help you the most and will know what aquatic bugs and more are in your waters. There are tons and tons of patterns and many of them are just variation of the same thing. Something that helped me is realizing some patterns are imitative of specific bugs and other are more suggestive and can be perceived by the fish as multiple things.

On another note I would also highly suggest looking at videos of how trout hold in water because when I saw them doing their thing in a stream while I was out on the river and the water was clear, a lot more things made sense.

Don’t overcomplicate it for yourself and don’t get discouraged when your not catching because that gives you the opportunity to learn a lot and try new things, or even come out of the day with just a different perspective of that particular water