If you are eCom your first choice should always be Shopping + Search. Next if you got the ressources branch into YouTube.
I would advise you to currently only use FB for retargeting or if you have enough data using buyers LLA for prospecting. Anything else will be less performant for the next few months just given the circumstances alone, not accounting for any algo slips or the likes.
There is something wrong in past months, there is a lot of talk about it here plus business dropped significantly for me this month, like extremely, most of my customers are from USA and they seem to stop buying.