Polygyny is culturally accepted, but not legal, in a region of the Philippines. However, it is legal for Muslim men to have more than one wife in the Philippines. Perhaps it would be easier to find a woman in the Philippines who is open to being in a plural-wife family than it is in some other countries(?)
When the stupid war eventually ends it's going to be somewhat easier to find women open to poly both from Russia and Ukraine. Between the two countries there's some 250,000 or more widows with children who need homes.