I used to use the automatic backup system provided by Google where it would backup my files automatically, at regular intervals to Google drive.
However I realised this was not a good policy as a cloud file would be overwritten by the latest PC version of the file.
Now you might think this is a good idea, but consider, if you have malware on your PC that encrypts all of your files! You don't notice, the backup system runs. Now have encrypted files that you cannot access, both on your PC and on the cloud drive.
What I do now is, every time I create a new folder on my PC, usually for Microsoft access files! I create a corresponding folder on my Google drive. Now in my PC folder, I create a link (shortcut) to that Google drive folder.
At regular intervals I click on that shortcut which opens Google drive to the correct folder. I click on "upload" and upload the latest files out of my PC folder to preserve them in the cloud.
If I am working on a complicated database I will also create a Google document in the cloud and create a shortcut to that in the PC folder. Whenever I want to make any notes, I make all my notes in the document on the cloud.
I also have a complete backup of my PC just the the working files like access and the like, on memory sticks and also the same memory sticks are stored in the Google cloud.
That reminds me, maybe it's time to make a complete PC backup again!