Question for Mojang Studios

Hello Mojang! I just wanna ask: Is Minecraft Java Edition (written in Java) stabile? I mean i had a problem where i go to the older version of the game (alpha, beta) and get back to newest snapshot and no sound for Piglins, Hoglins, new mobs added in 1.16... And to slove this problem i nedded to uninstall Minecraft Launcher and installed again. And i had some vierd experience with Java... Is there in Java code something get deleted or corrupted... Please answer my question Mojang i love sooooo mucha Minecraft but Java is my favorite so this question is soooo inportant to me... Your favorite fan Anthony! ☺☺☺ Thank you so much! If Mojang does not respond to me please you who reading this respond to me in the comments if you know the answer. Thank you!