Any reason you aren’t using the auto partitioning?
Discussion
I tried and it won’t let me set the tags and it’s not showing the main partition as a clickable option as unallocated space or letting me create new partitions like gparted will. Everything worked the first time with gparted minus letting me format the boot loader partition as FAT32 as directed
When I have problem with the disks and partitions I would clear the partition table and reboot , then try this again if partitioning and installation has been tried before.
dd the header of the table and then wipefs .