I think you are using translator right?
你好！ 请检查文本。 帮助修正错误。 not very natural
My version：大家好，可以帮我检查一下下面的话有没有什么错误或者不地道的用法吗？ 谢谢！
我学习很努力，因为我想找一份中国和汉语有关的工作。 If you wanna say you want to find a job which in China and the job is related to Chinese language.
My version： 我学习很努力，因为我想在中国找到一份和汉语有关的工作。
I think there are too many things need to be corrected, maybe we can add each other, and help each other? I'll try to correct all of them in the future. If you're interested, text me. I'm a native Chinese speaker and I'm learning Russian right now( but I can't speak ), I'll try to explain things in English. If you know English, If you don't know, It's okay, we'll try to find a way to communicate.