You’re going to have to do better at describing what is going on. “Vroom vroom” is a typical way of describing what a car sounds like when everything is good. (Was it Mazda that had the “vroom vrooom vroom” ads?)
In general an engine makes A LOT of noise. They work by explosions inside of the engine. If you’ve ever heard something like a really loud motorcycle that gives you a taste. The only reason most engines are very quiet is that they have muffler systems. Once those explosions go through the exhaust system the sound is often described as “vroom vroom.”
So that’s one thing - if your car has recently gotten louder then have someone inspect the exhaust system.
Short of that post a better description along with the basics about the car - year, make, mileage…stuff like that.