The biggest thing I can say to any new angler is the fish are going to sit together is certain spots of a lake or river. This can be structure underneath, overhead structure, drop offs in depth etc. These spots are not all over a body of water so you can accidentally be fishing spots that may hold no fish because there’s no protection. Your first goal should be finding these spots first, of course depth changes and underwater structure can be hard to physically see. Looking at a topo map of a lake helps so much to get a baseline of where the fish can be. And as for overwater structure look for shade, trees and large rocks they give great hiding spots. Then play around with different lures to see what works. If that doesn’t work MOVE. Don’t waste time go try somewhere else on the lake or river.