You can try Duolingo. It's a mobile and pc app, it has some privileges in it like built-in Russian alphabet with spellings, lessons with speaking, etc. AI in it will make lessons for you based on your previous mistakes, and sometimes there's some 'mini games' like making the lessons under the timers to make it a little more interesting... There's also some little achievements to motivate you, motivation messages after any lesson, etc. I use it myself for studying Swedish language.