I'm not good at English a harshest

I'm not good at English
a
harshest not correct, you may be mistaken for another.
ผลลัพธ์ (ภาษาอังกฤษ) 2:
I'm not good in English.
send a message to give you must not be misunderstood again
.
ผลลัพธ์ (ภาษาอังกฤษ) 3:
I am not very good at sending a message in English

Hai you don't you may be referring to be mistaken.