Never let anyone tell you that nonsense about 'you shouldn't have to initiate contact, your real friends will initiate contact with you'. If everyone did this, everyone would have exactly zero friends.
Think about it a moment.
You wait for your 'real' friends to initiate contact with you. Naturally, they also wait for you to initiate contact with them, to prove you are their 'real' friend. No one contacts anyone and eventually neither of you would know how to contact the other even if you wanted to. Everyone henceforth exists in a state of permanent forlorn friendlessness.
The truth is that friendship takes work. The truth is that in our increasingly isolated world, where you may see more ads in a day than you see people, people are increasingly unequipped to understand how to do that work, or too afraid of rejection to try.
As someone who lived a long time with both a lack of basic understanding of how to cultivate and maintain friendships and who suffered from intense social anxiety, I can tell you that if never initiating contact with people was how you made 'real' friends, I would've been the world champion of friendship. Spoiler alert: I was not. Over the years, I've gotten better at managing my anxiety and learned how to socialize by carefully observing what people with a lot of friends do. Which is this: they are the ones initiating contact more often than not.
People are busy, or bad at socializing, or have a social anxiety disorder, or have executive dysfunction, or all of the above and more. Even if you are always the one initiating contact, it doesn't mean they aren't a 'real' friend. Only the nature of your interactions with them can determine that, not who initiates them.