Corrections in red. Stylistic suggestions in blue.
I'm afraid to speak English!!!
There are lots of people here whom I can speak English with, but I've just understood that I'm afraid to do it! I don't know, maybe it's because I'm too shy (that is ridiculous for a 32-year-old woman who has a child), or I just don't want to look like a fool (for example when I forget a word and try to remember it)... What can you advise me in this situation? Maybe there are other ways to train my oral speach? For example, some Internet resources where I can speak with a machine, or any techniques to speak with myself?)))

It’s a little bit more natural to use “afraid to” when referring to something that you can decide to do or not do; and to use “afraid of” when referring to things that will happen unintentionally, i.e., you do not decide whether or not it will happen. Example: “I’m afraid to drive my car over icy roads, because I’m afraid of being injured in an accident.” I used “afraid to drive” because that is something I can decide to do or not do; and I use “afraid of being injured”, because whether or not I am injured is something that happens or not without my being able to decide if it will happen or not.

The Russian formula (x)летний usually translates well as "(x)-year-old".  Thus, "a 32-year-old woman."

I'm afraid to speak English!!!

There are lots of people here whom I can speak English with, but I've just understood that I'm afraid of it! I don't know, maybe it's because I'm too shy (that is ridiculous for 32nd year old's woman who have a child), or I just don't want to look like a fool (for example when I forget a word and try to remember it)... what can you advise me in this situation? maybe there are other ways to train my oral speach? for example, some Internet resources where I can speak with machine, or any techniques to speak with myself?)))