Multiple sensors in one automation

Need some direction/ideas in how to setup an automation and then the Alert to SMS as I have read a number of posts and tried a number of ideas but just cannot seem to figure out what I need to do. I have a number of freezers and the below template gets me any that have temperature in the name and are above a set temp but when I add it to the message section of the automation it either does not work or is automatically removed by the editor.

{%-for state in states.sensor
if (state.entity_id.find("temperature") | int>=0) and (state.state == 'unknown' or (state.state | int>=20))%}
{{}} :: {{state.state_with_unit}}

Current Automation:
- id: '1580850664300'
alias: Freezer Notification - Run every 10 min
description: ''
- minutes: /10
platform: time_pattern
seconds: '00'
- condition: or
- above: '20'
condition: numeric_state
entity_id: sensor.freezer_one_temperature
- above: '20'
condition: numeric_state
entity_id: sensor.freezer_two_temperature
- above: '20'
condition: numeric_state
entity_id: sensor.freezer_three_temperature
- above: '20'
condition: numeric_state
entity_id: sensor.freezer_four_temperature
- above: '20'
condition: numeric_state
entity_id: sensor.freezer_five_temperature
- data:
message: >
{%if(state.entity_id.find("temperature") | int>=0) and (state.state == 'unknown' or (state.state | int>=20))%}
{{}} :: {{state.state_with_unit}}
title: Freezer(s) reporting temperature issue
service: notify.sms

Why go with the timed trigger vrs triggering off the items moving above 20?

I had thought of that so you have encouraged me to change the trigger. I will give it a go.

if you go the trigger route, then your message can be simple.

Also before you do any of this look at the alert integration. It may do what you want without any automation meddling.