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The Flickr app gives you 1TB of full quality auto backup. It doesn't compress them like Google photos. I haven't used it though so I can't say anything on the app quality.
Ok, now for the future: a smartphone can fail/be broken/be stolen anytime, if you have something precious on it: make backups !
Some free solutions:
Cheers and good luck to your barber
From what I know of Flickr, they do respect photo quality, but according to this app review that is not the case.
As an alternative, try the new flickr. They give you 1 TB, have superior editing tools, have great search just like Google's, and don't have Google's ridiculous licensing backdoor.