Ansible Core multiple versions are showing

Scenario: Existing ansible core 2.11 and planning to upgrade to ansible 2.4
i already updated my phyton from 3.6 to 3.8
the installer i have downloaded an online Ansible core 2.4 installer from redhat portal

upon running the installation of ansible core 2.4 i have an error saying that i need to have ansible core 2.14 to proceed.
running ansible --version the output was ansible core 2.12 and python v3.6.
running pip install i have ansible core 2.13
and running dnf install i have ansible core 2.15

currently i do not know how to proceed since different command shows different versions of ansible
i also try to edit ansible.cfg to specify python 3.8 to be in used but it is still showing python 3.6
the ansible.cfg. can you share a reference link for similar issue? or should i scrap my current installation and directly install ansible 2.4 from scratch?