Is"many thanks "wrong ?

when you want to thank someone ,which word is most traditional?
I aways used "many thanks" before a friend told me is wrong ,In my work email,she told me you should use"much thanks",is it correct? But I can find the word in dictionary,the meaning is lots of thanks, and other colleague use the word:many thanks
so ,who can tell me ,which is correct"many thanks " or "much thanks ", or both of them correct? what's the difference?

你好朋友们，请帮我把这些句子改一改！谢谢大家

我马上要找你，但是一出门恰好见了你。 ---我刚好打算去找你，但是巧的是，一出门就碰见你了。。
I was about to look for you, but once I left I luckily saw you.

我最担心的是我能否承受那么久和无聊的时间---时期。
I am most worried about if I can bear such a long and boring time.

我正在养一只狗，但我发现他不爱听话，我怕我对他---它太宽容。
I am raising a dog, but I realized she doesn't like to listen, I'm afraid I treat her too leniently.

谢谢大家！

your chinese is good,how long have you learn?

How to study English as a chinese?

As a chinese,English is import for me . In china , we study English from childhood,even we need pass examination in the most important exam --College Entrance Examination,you kown.
and when you graduate, have a job, if your English is good ,it will be helpful, In foreign company, English even be the working language,so as a chinese,especially in first -tier cities like shanghai,I felt stressed.
Although we study English from small to large, we English skill is still poor,why,because our traditional education way is just for pass exam,so maybe we can have a lot of vocabulary,but we can't talk,and we havn't English thinking. when I worked ,I find the best way to study English is to use it.
You must talk with foreigner , the best is English speaker, you write English as the working language, learn thinking like the English speaker,practice English thinking.
But the reality is in china, you find a English speaker who want to and have time to help you practice is very hard. that's why I come itakli, in shanghai ,is better than other city, there have more English speaker.the way we find the partner is internet.but ,you kown, is virtual , you must screening , a small number of people isn't have good motivation, I really don't like it.
------to be continued......

What is the best way to study English as a Chinese person?

Being Chinese ,English is important for me . In China we study English from childhood, we need pass an English paper in the most important exam --the College Entrance Examinationm,Furthermore,when you graduate,it will be helpful when searching for a job,if your English is good.In foreign company ,English even be the working language,so being Chinese,especially in  first-tier city like shanghai,I stessed.