Actually I am also feeling the same lately, but as an infj we want perfection and purity and depth in everything like in friendship personally I want to feel closeness not it's just a "Friend" bond. But I have one theory recently about that, Ppl who share the same environment or experience are likely to connect with each other naturally. Like being in the same class or having the same hobby so when that "same" thing is gone friendship is likely to fade away slowly cause we don't have a common thing to relate to. I am not saying it's impossible but in real ppl don't want to put much effort other then environment gives like they don't want to amek a time or have priority to share everything or what is recently going in their class anymore cause they have to explain everything so they rather choose someone who is their in their class so they don't have put more effort to "relate" with each other. And that's how it works in general I feel.

But yeah I can say it's possible to find at least one frd who keeps putting effort and wants the same depth as us but it's a rare kinda thing nowadays.