The go-to hub for regional translations (Hrvatski/Srpski/Bosanski).
If the text is appearing a few seconds too early or late, most players like or BSPlayer allow you to adjust the delay manually (usually using the G and H keys) so the dialogue perfectly matches Masha's calming (or chilling) voice.
If your streaming service doesn't have them built-in, you can typically find high-quality .srt files on these community-driven platforms: