我是一个懦夫英语

I am a cowardI am not braveI am not a brave personI am no heroI am a chicken (俚）都有我是个胆小的人之意，按语境选择。

i'm sorry,please forgive me that i'm only a coward.

I am a coward ,when causing troubles to people around me,what i think is to escape,not to make it up.i am completely a failure. 用 when从句 比较好一些。after 比较生硬is to ……not to 是比较好的句型，符合你的语气

I am a coward, who never try to make up for the trouble that I had brought to the people around me, but only think of escape. What a definite loser!

im just a coward

I'm a coward who always makes troubles to the people around me, and what I do is just shirking rather than atoning.What a loser in grain.注意细节，保证准确，自己评价！

I am a coward. I just try to evade from my responsibility after bringing trouble to people around me. I have never thought of taking some action to make up for my wrongdoings! I am a total loser.