Ive discovered that in foreign countries tinder premium + boost + superlikes works very well. Make sure your profile stands out as a foreigner as many girls will be interested in someone different. Your opening sentence should be in the langauge of the country to grab attention and the rest could be in english.
Ive had success in marrakech, stockholm and Oslo with this. I got a mixture of working girls and normal girls who i sometimes slept with (it took a few dates and a bit of work). Also Chose decent pictures.