Here are some ways to write this differently.
A little bit about myself
Hello, my name is Anatoly Shtinov. I'm here to find a person who can give me a hand with my english. Especially with the speaking part. I've been studying english for a few years by now and at the moment I have a substantial passive vocabulary, which allows me to comprehend most of the content. Though it is still rather difficult to express myself clearly and precisely.
In exchange I would really like to help you with Russian.
All the best.
In addition to Jason's corrections, here are a few more.
A little bit about myself
Hello, my name is Anatoly Shtinov. I'm here to find a person who can give me a hand with my English, especially with the speaking part. I've been studying English for a few years by now and at the moment I have a substantial passive vocabulary which allows me to comprehend most of the content. Though However, it is still rather difficult to express myself clearly and precisely.
In exchange I would really like to help you with Russian.
All the best.