These "cloud" providers aren't what they advertised a decade ago. Not worth it for paying anything more than 50GB of data for most people. There's no realistic way most people would use more data than that on the cloud, unless if they're archiving data or storing media on there (which is also dumb). Cloud is horrible for archival data. If you have 100GB of data on there, and they shut the service or hike the price, you'd be screwed. The cheapest option is to setup your own server and NextCloud or Seafile. Even Google Drive ended "free" cloud storage for educational institutes. All that free stuff was just bait to get people reliant on the services. Best option is still to buy a machine with more storage (which apple makes unnecessarily expensive and impossible to upgrade for no reason), and then backup to an external hard drive.