i don't really know what manga you are talking about (because this situation happens from time to time) but don't let it bother you, people like to bitch here even though they get everything for free.
but if you are going to work on other stories ask for help (like proofreaders). i'm not telling this because of other people, but it will be easier for you. i think there are always people willing to help.
There's no need to apologise; you're providing a service for free. ^ ^ However, like Anon said, proof readers are a huge help.
I think I know the manga..
No need to apologize., honestly.. You did a great job although English is not your first language and not so many people can't do that.. As long as we know what the manga wants to explain., it's already a great happiness for us.. Thank you very much for your hard work! :)
Practice makes perfect you know, not getting all the english right at first is totally normal. People will always complain, but the truth is that getting it translated with some errors is wayy better than not getting it tanslated at all! And if you're having some problems with english, yknow since it's not your first langage and all, but you really want to translate, then I'm sure you could ask anyone here to help you out with some proofreading! I know I wouldn't mind, at least, though I don't know if I'd be any help.. english isn't really my language either..
Translated** oops
Nah man, you did a good job. I don't even understand those people that said "I couldn't even read it."
I could read it just fine they're just being over dramatic.
Also like first anonymous said. Some people like to pout so much even though they get this stuff free of charge from people like you that take free time out of their week for us.
I'm so sorry to have posted manga with bad English.. English not my native language I just wanted to help people read manga, but it's bother to you guys