Chinese is not as difficult as someone says. 中文没有想象的那么难。You can handle it if you try. 你可以的！

只要你愿意，那没有什么不可以呀

对，只要努力，没什么自己做不到的

Извините.я не понимаю. 我可以学习中国人吗？(Я могу учить китайский?) Вы хотите говорить ." Я могу выучить китайский язык?"?

I think Mandarin is a little bit hard to be learnt, sometimes I teach my foreign teach, despite they can say some words in chinese but some of our costom to speak Mandarin is a little hard to explain to them. You should try your best for it. Come on!