I'm afraid to upgrade Minecraft to 1.14.0

Guys I'm very scared to update my Minecraft 😦😧. Sometimes when I upgrade my Minecraft may crash, my Minecraft account may crash, etc. Guys what's the bug when I upgrade Minecraft? I will update it to see if there will be any bugs. If you have any bugs I will let you know and if you have no bugs I don't need your help anymore. Thank you. 😀👍 There is also one more thing to say to you: Once on my tablet when I upgraded Minecraft to 1.12.0 then my account went away. That's why I'm afraid to update it.