The issue with proprietary backup utilities like Samsung's Smart Switch and Huawei's HiSuite is they're optimized to work with only specified brands, and it's a matter where you need to be using that utility both to create a backup and to restore data from that backup. The issue being not all Android devices are running with the exact same directory structure -- some, like Huawei, more or less use the default Android established file/folder layout but some, especially Samsung, use its own, highly modified file/folder layout so in this matter as a good example, the HiSuite utility isn't going to be as familiar with Samsung's non-standard folder arrangement so trying to do a task like restoring data from your backup is a problem.
You might be able to at least manually copy your data over onto your new Samsung phone though. When you view that HiSuite backup on your Mac using the Mac Finder (the default file manager), do your files and documents appear to be in their native file formats stored in different folders? (i.e. photos as jpg, audio files as mp3, etc.) Of so, you might want to copy them to their appropriate folders on your Samsung phone, or use the import function on things like a browser app to add bookmarks. It's not going to be a seamless project since you're doing this all manually. But if that HiSuite backup appears to be more of a modular, single file where you can't view its internal content,that will be a problem.