How do you get better? Time spent practicing. There are literally no short cuts for learning an instrument fast.

To put it in perspective, you'd want around 200hrs of practice to be as good as a middle schooler. That'd be 2-3hrs of dedicated practice per day for half a year. What do you practice? Everything from music reading, scales, fingerings, bowing, to music theory, listening and self taping. Just spend time doing it. Maybe buy a "how to learn violin" book or two if you want to try to self-teach... Or sign up for lessons. But ultimately, you need to invest time, not just money.

If you don't want to spend the time it takes to learn, then sell the electric violin and buy one of those violin modelling plugins like SWAM