You have tasks defined in a file (note: check crontab-guru for easy crontab syntax editing, verifying, and maybe understanding)
# Daily
0 5 * * * /usr/lib/db_maintenance_1.sh >> /var/log/db_maintenance.log 2>&1
# Weekly
0 5 * * 1 /usr/lib/db_maintenance_2.sh >> /var/log/db_maintenance.log 2>&1
# Monthly
0 5 1 * * /usr/lib/db_maintenance_3.sh >> /var/log/db_maintenance.log 2>&1
And manually you would add them with this command
cat cron_tasks | crontab -
But in Ansible you can read file content into a variable and assign that variable to stdin easily like this
- name: Add cron tasks
command: "crontab -"
args:
stdin: "{{ lookup('ansible.builtin.file', 'files/cron_tasks') }}"
Just make sure that these tasks are the only one that you want for that user (previous tasks will be deleted)