Facebook ads vs google ads

I used to run facebook ads in tier 3 countries got high ROAS but their COD market is fucked. you could never be profitable there. So, for tier 1 countries I don't think prepaid will help me as I think less users go prepaid in USA and all + I haven't any partnership with US person for ware houses as I will be scaling from scratch so returning orders will make me go in loss. + Facebook ads isn't profitable for technical products/ digital products. I want to know who had success in digital products with facebook ads. I am thinking to start with google ads. what products should I promote?

facebook ads not fast moving in all industry people.

i think google ads are better than fb adds.

google ads are much quicker to gain potential customers rather than facebook ads , they do work but it takes time , remarketing and also branding .