Google Ads is too aggressive for this sort of product that requires knowledge of many things. The product is niche and would need a simple youtube video series to explain it, with a descriptive title and description text.

Ideally, in the video(s) you can talk about how the viewer can setup the solution themselves, breaking it down into components, why each is important and how it all works.

Also introduce how the viewer can buy the entire solution from you directly, where’ll they’ll get some custom support/troubleshooting or they may just hire you for consulting.

This will function as your funnel to let your target customers find your solution as they search for ways to problems they have self-identified.

If you’d like you can also do retargeting ads on the viewers of your video, as they’d be more likely to buy your solution vs the avg joe.

I'm more hopeful for humanity now that I know my testing methodology was bad. Thanks for the information!

For this kind of thing, you'd want to advertise it on e.g. Tindie - that's where the likely target audience would look for it, I think.