This is the 7787th most frequent French word.
sascha
"Sascha" is not a French word; it is a given name of German, Russian, or Slavic origin, often used as a diminutive of "Alexander" or "Alexandra".
Here, 'Sascha' is used as a proper noun, referring to a person's name.
Sascha est un prénom d'origine russe.
Sascha is a name of Russian origin.
In this sentence, 'Sascha' is again used as a proper noun referring to the subject's name in the sentence.
Je crois que Sascha aime beaucoup la musique classique.
I think Sascha really likes classical music.
'Sascha' here is used in a conversational context as the name of the person being referenced.