Learning to lucid dream can take time. Lots of people get frustrated, feel like they are not making progress, or get stuck in a dry spell. Confidence and placebo are a huge part of lucid dreaming. Frustration can easily kill this confidence.

Try Dream Incubation as a stepping stone to Lucidity, or a fun change from the routine.

Incubate a dream. Come up with the place you want to dream about. You need to come up with a general dream topic such as 'A Dream At The Beach".
Then get specific with a detailed visualization that engages all your senses. Take a minute to daydream about this imaginary place during the day whenever you have some free time. Then, as you are drifting off to sleep, imagine yourself in your dreamscape. Don't try to enter it directly with WILD. Just imagine it, really feel it, and let yourself just fall asleep normally.

You should have some dreams that are very similar (but still unpredictably strange) to the one you incubated. If you incubate the same dream scene several days in a row, you can start to use it as a dreamsign. 'Next time I'm at the beach, I will know I'm lucid." This works well for people who can't find dreamsigns in their normal dreams.

I've had this work for many people who had little to no experience with LD. It shows you how you can be in control of your dreams. It also builds the visualization skills needed for more advanced techniques. When you get confident doing this, just switch to incubating Lucid Dreams Directly. Or take that visualization and do it at 4:30 in the morning as a VILD.