Trouble Creating Partition

Hi Community,
I need help to make a rescue block. I thought I was doing everything right, but I guess I am not. I am trying to create a partition using multiple plays. The first one is to check if the disk is available. If not, then throw an error. The second one is to create a 1G partition. If the space is unavailable, create a partition for whatever space is left on the desk. Rescue will make it work by creating a partition from the leftover space. The sdb disk is available; earlier, I created a partition with 800MB. The disk still has 224 spaces left. For some reason, it is not using the rescue part at all. My brain is not working anymore. How can we achieve that? The goal is to create a specific partition size; if there isn’t enough space, make one, whatever is available, instead of failing.

- name: Partition playbook
  hosts: webserver
  become: yes
  - name: check disk avaialbility
      - name: if sdb doesn't exist then throw an error
          msg: "sdb disk doesn't exist"
        when: '"sdb" not in ansible_devices'
      - name: create 1 GB partiton
          device: /dev/sdb
          number: 1
          part_end: 1GiB
          state: present
        when: '"sdb" in ansible_devices'
      - name: Display a message about space
          msg: "There isn't enought space in in the disk"
        when: '"sdb2" not in ansible_devices'
      - name: create partition whatever space available
          device: /dev/sdb
          number: 2
          part_end: "100%"
          state: present
        when: '"sdb" in ansible_devices'
[ansible@ansible-server ansible]$ ansible-playbook storage.yml

PLAY [Partition playbook] ***************************************************************************************************************************************************************************************

TASK [Gathering Facts] ******************************************************************************************************************************************************************************************
ok: [node1]

TASK [if sdb doesn't exist then throw an error] *****************************************************************************************************************************************************************
skipping: [node1]

TASK [create 1 GB partiton] *************************************************************************************************************************************************************************************
ok: [node1]

PLAY RECAP ******************************************************************************************************************************************************************************************************
node1                      : ok=2    changed=0    unreachable=0    failed=0    skipped=1    rescued=0    ignored=0
[ansible@node1 ~]$ lsblk
sda           8:0    0   10G  0 disk
├─sda1        8:1    0    1G  0 part /boot
└─sda2        8:2    0    9G  0 part
  ├─rl-root 253:0    0    8G  0 lvm  /
  └─rl-swap 253:1    0    1G  0 lvm  [SWAP]
sdb           8:16   0    1G  0 disk
└─sdb1        8:17   0  799M  0 part
sdc           8:32   0    1G  0 disk
sr0          11:0    1 1024M  0 rom
[ansible@node1 ~]$

Thank you for your help!