Okay kiddo, do you know what colors are? They are the different things we see when we look at different objects. Some things are blue, some are red, some are green, and so on.
Now imagine you want to take a picture of something and show it to your friends on your computer. The picture has to have the same colors as the thing you actually saw.
This is where sRGB comes in. sRGB is like a special way of telling your computer what colors should be in the picture. It's like a secret code that the computer uses to make the colors in the picture look the same as the colors of the real thing.
So by using sRGB, your picture will look just as beautiful and colorful on the computer screen as it did in real life. Pretty cool, right?