How high is the barrier of entry to friendship for you? What's required for you to think of someone as a friend?
Are you happy with where it's at for you?
Depends on definition of friendship! I am universally pretty responsive and will show up to things. I am also pretty easy to get to respond regularly, though this threshold varies with dunbar saturation ofc
Universally if you just keep talking to someone frequently, you will eventually be friends if you pass some basic threshold for sync with them. There have been studies on how long this takes, and IME it has to do with sync rate.