To change your default download folder follow the given steps:
1- Press the three vertical dots appear on the top right on Google Chrome screen.
2- Now go to Settings.
3- Scroll down until you see The Advanced option. Click the Advanced drop down button.
4- Scroll down until you see The Downloads Location option. Click on Change.
5- Select your desired folder and press OK.
6- The download location has been changed. Now all your downloads will be saved in the selected folder.