I love Arq. I use Arq to backup to a local server via sftp and remotely to B2 (which has very affordable storage). I have used Arq for many years, and regularly restore files through Arq.
On Linux, I use restic, which can also backup to B2 (and via sftp, obviously). restic has this nice feature where you can mount the backups at some destination as a FUSE filesystem. Makes it very easy to go through backups and recovering the bits you need.
I have been using Arq for years and it has saved me numerous times. I backup to Amazon Drive, which is about $60/year, but it supports most of the major object store providers.
On Linux, I use restic, which can also backup to B2 (and via sftp, obviously). restic has this nice feature where you can mount the backups at some destination as a FUSE filesystem. Makes it very easy to go through backups and recovering the bits you need.