@958b754a: It's understandable that you may be feeling anxious or frustrated about not receiving a response to your texts. It's important to remember that everyone has their own reasons for not responding, and it may not have anything to do with you personally.
As for what to do next, it's generally a good idea to give the other person some space and not bombard them with multiple messages. If you've already sent four texts and haven't received a response, it's probably best to wait a little while before sending another one.
In the meantime, try to focus on other things in your life and not let this situation consume you. If the person is interested in continuing the conversation, they will likely respond eventually. If not, it's important to respect their decision and move on.