google ads bidding strategies: ROAS

Hi guys,

I hope you can help me. I was searching for that information everywhere in the web, but couldn't find what I'm looking for. So now I am here...

Question upfront: Is there a smart bidding strategy like a "Minimum ROAS"? (Instead of Target ROAS; but to maximize absolute ROAS with unlimited budget)

I run different dating campaigns in different countries Google Ads (Search) since several months.

• In the beginning I used "Manual CPC" as a bidding strategy.
• Meanwhile I switched to "Smart Bidding".
• First "Maximize Conversions" with "Target CPA".
• Now I run them in the "Maximize Conversion Value" with "Target ROAS". Which works well.

Anyway, what really bothers me: Google doesn't find the sweet spot itself. In other words, I still have to find out by testing, at which point I have the highest overall ROAS in absolute figures.

• whether I want to have a higher volume, but lower margins
• or lower volume, but higher margins.

Google does have all the information to calculate and predict this sweet spot itself, or?
Is there any function I didn't find to set an automatic bidding like "Highest Conversion Value (absolute)"? Am I stupid?

I also don't have a limited budget. So I don't want have a specific ROAS for the specific budget, but I want to spend every single $ until the ROAS for the last $ is 101%. So there should be a bidding function like "Minimum ROAS (percentage)"? Or am I just wrong?

Maybe work-arounds?

Thanks for reading!