When downloading items from the web, they are by default downloaded to your "Downloads". You can access your downloads folder in many ways. I show how that can be completed below.
It is advisable to "Pin" your "Files" application to your taskbar. This will make quick access to your files.
From the files application, you can also quickly access your google drive files. This can make the organization of downloaded files seamless as you choose where you want to download a file, and you can download it straight into your drive folder.
It is best practice to operate out of your google drive folder, and not your downloads as downloads do not transfer from device to device. If you work out of your google drive and your device fails, I can easily give you another resulting in minimal downtime while yours is getting fixed.