roast in (someone's) own juices

Translations
жарить (кого-то) в собственном соку
After losing the match, he was left to roast in his own juices.
После проигрыша в матче его оставили жариться в собственном соку.
Definitions
To suffer the consequences of one's own actions or to be left to deal with one's own problems, often as a form of punishment or lesson. The phrase originates from cooking, where meat is roasted in its own juices, implying someone is left to 'stew' or endure discomfort caused by themselves.