Hard drive head crashed and corrupted my entire android app source code which took my 5 months to build. I was depressed for 2 days and then started working for it again and updated the app on the store in 3 months. It was a terrifying yet amazing experience. Definitely don't want to go through that again.
Now I keep backups on the cloud. Lesson learnt.

You should be keeping it in version control really. Even if you're working on your own, VC is the way to go.

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Backups in the cloud are no backups. If they do, they belong to a more thought of plan.
Keep 2 local copies. (A Raid is no backup!) and at least one offside that you can get local in under 6hrs. Also be very careful where you save backups online.

@Zaphod65 VC is important, but won't keep you safe from physical damage

Github/Gitlab got ya covered.

Use Github, or if you want it selfhosted, GitLab.

@Kimmax @Zaphod65 If the repo is stored locally on the hard drive that crashed, good luck recovering it

rsync and git