1/ Watch Ultimate Google Ads Training 2021: Profit with Pay Per Click by Isaac Rudansky
2/ Watch The Google Ads Bootcamp by Aaron Young
Then do the certifications from google skill shop, after finishing the courses above + the certifications you will be well equipped to launch and manage google ads campaigns.
You can volunteer for a non-profit on volunteermatch to get real world experience (be upfront about your experience).
Non profits get $10k/month in ad spend for free from google, so it's a good place to start.