The point of this website: It is a teacher marketplace. We users tend to believe, that it is a language exchange community, but this is not what the Italki team thinks.
Then there are way more English learners than English native speakers, so it is really difficult to find a native speaker who is available and a good fit. Also, I guess many users don't have time for daily Skype exchange (I certainly don't).
Yes, it is true that it's a bit difficult to find some native speaker to speak with but it's not their fault or it's not like they don't want to help but they are less in number as compared to the users who want to learn English.So it might be difficult for them to manage.But you can practice with someone who is also learning English.As first of all you can get rid of your nervousness and get the confidence to talk without any hesitation.So yes, that's an idea you can try:)
If I can help you in any way then please let me know:)
Thank you:)Happy learning:)