There is good and bad with all the technology and how people meet now vs when I was younger and single. The good is - it is quick and efficient - the bad -- you are experiencing it. So easy just to dismiss someone. It happens to everyone. My daughter met a young man through an app - then ended up hitting off and dated quite a bit -- he was going to college about 2 hours from her college but he seemed to like her enough to travel the 2 hours frequently to see her.
Then they both went home during Christmas break. Upon coming back to school, he had taken her off all social media and did not respond to her texts. Seems this has happened to a lot of her friends before. Ghosted I think they refer to it. Coward in my opinion - we used to actually break up in person.
So long and short - you are not alone.