Dynamic Alt Text Coding for SEO

I need help with dynamic shortcode coding and development on my WordPress site using Google Docs Sheets, RankMath SEO, and the MPG plugin.

My current setup allows me to change city names in titles and descriptions, but I need to automate the alt text for images dynamically.

I need someone to:
- Code dynamic alt text for one project
- Guide me on replicating it for others

Ideal skills and experience:
- Proficiency in WordPress
- Experience with dynamic shortcodes
- Familiarity with MPG and SEO plugins
- Strong coding skills

I only need to learn how to change the alt text output.