Seagate Backup Plus Mac reformatted to NTFS don't mount on Mac
You can surely wipe it using Disk Utility and choose ExFAT or HFS+ or partition and use both. If cross platform is your goal, I would see if ExFAT works for your needs. 


https://support.apple.com/guide/disk-utility/erase-a-volume-dskutl14079/mac


For any of the choices above, use GPT the GUID Partition Scheme.