iPhone 8 Home Button Cracked on its own

Not only did the phone home button break on its own, but it got super hot and burned my daughter.

Apple needs to repair/replace these phone that we spend tons of $$$ on when they have KNOWN DEFECTIVE PARTS !!!!!!!!!!!!!!!!!!!!!!

Someone at Apple please tell me how to get this repaired and have the repair covered, since this was the fault of Apple and not the user.

Thanks

[Edited by Moderator]