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I never see anyone talking about this but it's so easy. Google Translate allows you to record your voice and it guesses what you are saying. Perhaps if you change services like Siri or Alexa to your target language it would also work.
I was having trouble pronouncing the Russian word for hello, Здравствуйте. The Latin transliteration of this is zdravstvuyte. Note that this word looks like pure nonsense, to me anyway. But by using Google Translate I was forced to pronounce it accurately for the program to recognize the word. Then I could play back their recording of a native speaker saying the word and practice it. All you have to do is Google "translate Russian to English" and this pops up.
Of course it's not as good as having a native speaker listen to your speaking but it's very convenient.