There are a lot of free games for Windows; however Brawl Stars (GameLoop) is not one of them. For one thing, it's an old version of the game. The latest versions come with a new graphics and sounds, but there is a catch. If you want to get the new Brawl Stars (GameLoop) versions you will have to pay for them.
The good news is that you can download Brawl Stars (GameLoop) for free. All you need to do is find the right program to download the game from. If you're like me, you can't even remember where you downloaded the game from in the first place. Since I know nothing about computers, I am going to help you out here. All you need to do is search for Brawl Stars (GameLoop) and it should show up in the first five pages of results. Now, if you don't have the right program installed to do this for you, just go ahead and search the net for the game. The search engines will give you many links to download the application to your PC for free.
Just like any application, you should use caution when downloading applications to your PC. I would suggest you try and find an application that has been tested for viruses and spyware. This can be done by using a virus scanner. Keep in mind that a free application doesn't necessarily mean it is safe to use. If you choose to download a program, always look for a company's website to make sure they have a live support line.