Let's reach the speed of light!

We know that the speed of light is about 300000 kilometers per second.Which is almost impossible to achieve.Nothing has reached the speed of light.But I think it's possible to reach the speed of light. I am showing you a example.Suppose you are on the roof of a bus.The bus is running at 20 meters per second. Now you have a ball that you throw forward at 20 meters per second.What will happen then? Then the speed of the ball will be 20 + 20 = 40 meters per second relative to the earth.Notice that even if you or the bus has a maximum capacity of 20 meters per second, you can increase it to 40 meters per second.This is how we can reach the speed of light. First we have to build a huge rocket. Then we have to build another rocket inside it and another inside that.In this way, one has to launch another big rocket by keeping another rocket inside.The larger rocket has to launch its inner rocket after receiving its maximum velocity and then its inner one.Thus, if the speed of each rocket is 12 kilometers per second, it will increase each time it goes out, first 12, then 24, then 36, then 48 and so on.In this way, despite our ability to reach 12 kilometers per second, we can increase it as we wish.But I have calculated that if the speed of each rocket is 12 kilometers per second, it takes about 25000 rockets to reach the speed of light by running another rocket inside one.Which seems impossible at all. However, it may be possible to work with a few centuries.Maybe in a few centuries we will be able to reach that speed of light.