英语翻译请问口语中的“坑”一词如何准确的翻译成英文呢?例如：形容词：这个老师很坑,讲的烂给分还差.队友太坑了,一直不配合

The teacher is rubbish。 He is so bad at teaching, yet gives us very low marks。The team members are so rubbish/shit, as they never cooperate with me。I trust you, so please don't trick me。I could have won, but I was tricked。