If you’re feeling adventurous I use fiwi. Caters to the Thai crowd but they’ll usually see foreigners. Just message them and ask. Usually the agency/handler will reply. It’s cheap and you’ll find a lot of younger college age girls trying to make a few bucks. Use the Line app to communicate
https://www.fiwfans.co
If you’re feeling SUPER adventurous the 420agency has a lot of girls that will do BB. Just look at the profiles. You’ll need to translate the page though
https://fiwfans.co/agency/420Club