I appreciate the fact that you apologize.
The funny thing is that I am a professional PR.
Here are some marketing case studies I did regarding marketing indie games, maybe they will help you, they are all free I just want to help other devs. https://16bitnights.com/marketing-case-studies-on-indie-games/ (I also posted them on itch.io forums but I dont remember the links.
pro tip: always ask a PR for marketing case studies before working with him cause thats the only way to judge his skill.
Good luck in your endeavors