I would use this to know where you are at:
and then probably, you want to work on /dev/sdb, not /dev/sdb1.
/dev/sdb is the whole disk, while /dev/sdb1 is just one partition.
creating a partition table and a partition inside /dev/sdb1 would make too many levels.
creating a partition inside /dev/sdb will create /dev/sdb1
then when you exit, check it worked with
then you can use mkfx.xxxxx /dev/sdb1
and lastly, you can mount it