When I was in the same position, when I spoke to someone in Spanish (in a bar, shop etc) if they answered in English I would tell, in Spanish, that I was Russian and that I did not speak English., that way I got my Spanish practice. (no one ever answered me in Russian !!! )
You could also try looking in Spanish Newspapers for people advertising for 'intercambio' of language, or could put an advert in one asking for someone to exchange languages. I used El Anunciador (it used to, don't know about now, come out every Tues and Thurs)