For reference: a comprehensive backup + security plan for individuals https://nau.github.io/triplesec/
There is no way I would entrust Google or Apple with keeping important data. Google being infamous for account issues with absolutely no support and Apple already borked my account in a way that makes my iPad unusable the moment I turn on backup sync.
> Access a local copy of your Really Important Info storage data on one of your devices. You are fine.
My setup is Syncthing + restic for backups history. I have VM "in the cloud" that act as extra node/shit hits the fan plan too
* windows * android
* specific applications like
* signal * photos
and son on :D