I have been on this website for almost 2 years. And I realized that most language exchanges never succeed. I have tried language exchanges many times. Most people are not serious about learning a new language. They join this site and say all these things about studying a new language, but when it is time to actually have a conversation to practice, they become too busy. People like that idea of becoming fluent in a new language, but they avoid the hard work required.
You just have to keep trying. Send messages to 30+ women. Perhaps 1-2 will reply and that is enough.
If not, you can pay for English lessons. I stopped doing language exchanges, and I just pay for good teachers in Spanish and Portuguese. It is a lot easier. The teachers show up on time, they answer your questions, and they know how to teach.
Виктория, I see that you have already answered some questions that iTalki members have asked about Russian. That is very good!
When I consider replying to someone who is looking for a language partner, I always check to see if they are putting serious effort into learning their new language (by writing notebook entries or asking questions on iTalki). It also pleases me when I see that they have given some time to helping other language learners by correcting notebooks or replying to questions -- this shows me that they have a kind personality and that they understand that the iTalki community only works well when we mutually help each other (and that they aren't someone who just hopes to get free language lessons without giving anything in return).
Many iTalki members have said that they did not have any success finding partners by sending messages of introduction to potential "language partners." I believe it may be better to spend your time participating in the other community parts of iTalki -- the discussions, the notebooks and the questions/answers.
I think you are off to a good start because you are already helping Russian language learners and you are also here in the discussion section talking comfortably with other iTalki members. If you continue to participate on iTalki, I think you will eventually find a nice language partner.