Step 1 : Login your google drive , right click on the file you wanna to share . Move move your mouse over "Share..." and then click on the "Share.." .
Step 2 : On the popup window , click the "Change..." link beside the part that
says "Who has access" to change permission to view file .
Step 3 : Set it to "Public on the web" or "Anyone with the link" and click to save button .
Step 4 : Now copy your sharing URL , paste in something like note pad or address bar on browser . Copy file Id and paste in this link : https://drive.google.com/uc?export=download&id=FileID
Other MeThods to Direct Download Links For File On Google Drive
I : Use Web Link Generator
Copy Sharing link