Check ‘Modern Russian’ I and II (Clayton). It’s actually from 1960s, but no matter, great course. About thirty something hours of audio drills. https://www.abebooks.co.uk/book-search/title/modern-russian-1/author/dawson-clayton-l-bidwell-charles-e-humesky-assya/
“MP3 audio files are freely available via Indiana University’s CeLt website.” Some more info here: https://forum.language-learners.org/viewtopic.php?t=5568
Minsk State Linguistic University is a great place to study Russian, the courses and accomodation used to be very inexpensive.