我想学习中文

你好
我叫让马塞尔。我是法国人。我五十四岁。我结婚了。
我想学习中文。我讲法语和敬英语。 (I guess you were saying you speak French and English, right? English is 英语 [ying1 yu3], the pinyin of 敬 is [jing4].)

Your sentences are short, but all of them are correct, except a typo. Well done! Keep it up! :)

我想学习中文

你好
我叫让马塞尔。我是法国人。我五十四岁。我结(已)婚了。 
我想学习中文。我讲法语和敬英语。

Or you could say 已婚 (a short of 已经结婚）, a status of "already married".

我想学习中文

你好
我叫让马塞尔。我是法国人。我五十四岁。我结婚了。
我想学习中文。我讲法语和敬英语。