Definitely not Italy (I’m Italian) and based on my experience not in any of the countries you mentioned. Contrary to popular stereotypes, most of the people from these countries aren’t really friendly and open to meet foreigners. The culture is based on small social circles that date back to high school if not before. There isn’t much intermingling between groups…usually you get to know other women because you get introduced to them by a common friend. So, if you’re looking to party to meet women you’re out of luck there.
Also people are very “morti di figa” meaning they’re so desperate for women’s attention that they don’t want more male competition inside their groups which complicate matters even more for somebody who is an outsider.
If you’re very good looking you can try online dating, otherwise it’s a big pass.
The main difference between the two is that in Ukraine every single foreign guy I met was there for the girls/sex. In Thailand there are tons of sex tourists in Pattaya and even in Bangkok but many other people are there for the tourism, for working as digital nomads, to build local business, and enjoy the beautiful islands.
Honorable mentions: other countries in SEA although to a lesser extent than Thailand.