Why does a woman give her phone number on online dating and chat for days asking/giving details about our lives, then suddenly block?

I have made this observation lately a couple of times with 4-5 women. I am looking for a long-term relationship and match exclusively with women who seek the same and look for a "mature personality who knows what he wants", willing to start a family etc. Short story: Whatsapp numbers exchanged, a couple of days I get the impression that she is very interested, social media accounts also exchanged. But she messages me less frequently than she expects from me. Conversation is an absolutely normal and respectful exchange about our lives to get to know each other, with a healthy romantic tone - nothing sleazy. When I ask for a real phone call or video call, she is never available, never picks up, would only be available on weekend. Then roughly one of these scenarios play out: She sends me occasionally voice messages instead of a call. As the weekend approaches, she becomes even more absent in our communication and on the weekend she suddenly blocks me everywhere. Or if a date is promised on the weekend, she is absolutely unavailable up until the hour we agreed upon. When called, she doesn't pick up the phone or the number is invalid. Am I constantly running into a kind of romance scam, catfishing etc? Or is this nowadays a frequent behavior of average female users on online dating? Or am I failing to decode something fishy in those "long-term only" female profiles so far? Cheers

Why does a woman give her phone number on online dating and chat for days asking/giving details about our lives, then suddenly block?
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