You can get Insync Plus for free in the next 72hrs

I found Insync after learning that for years Google failed to deliver a Linux desktop client for Google Drive. Insync is the only GDrive desktop client with a graphical UI and automatic sync for Linux that I could find. I already paid some months ago, but at least you may enjoy this offer of getting it for free.

https://www.insynchq.com/free

It also works for Windows and Mac, but there you have the official Drive client and I don't know if Insync has any advantages over Google's solution.