Connecting Google Drive For Users

I want to allow my app’s users to connect to their personal google drive account from the app, and allow them to transfer the files they created on the app to their personal google drive account.
I also want to enable them to push a button and allow them to download a whole database of files.
I have been searching everywhere all week online. I tried Integromat and Zapier, they both are weird and don’t really show an option to let users. Their stuff is set up like if you the designer want the things to go to your own personal account.