Behavioral warnings are based on players reporting your chat, intended to warn that others feel you may be violating policy in an effort to get you to take a look at your behavior and maybe pull it back. We don’t see what is being reported, unless they eventually generate a report to be reviewed for possible penalties.
You might be able to, through your appeal. I wouldn’t be able to paste them here, but I can give you a general idea. From what I can see what put you over the edge is you recently calling someone “trash” and stating “you suck”, which by itself isn’t terrible, but taken into consideration with the previous reports, that is what led to the current penalty.