There are millions of Izakaya in downtown Osaka. Izakaya is a Japanese restaurant serving many small dishes that go very well with beer and Japanese sake. Most of these restaurants are not popular among foreign tourists. So they don't have English menus available. And most of the staff don't speak English. So it's difficult to order your food and drinks. But you can use Google Translate, and I hope it is ok. Please let me know if you need any help or want a tour guide. I'd love to help you :)