I feel like not a single person I get to know wants to match my energy

I’m an 18yo, M, ENFP and honestly, I’m tired.

Every time I get to know someone — especially girls — it ends the same way. At first it feels great, we talk, laugh, and I start thinking maybe this time it’ll be mutual. But after a while, I realize I’m the only one really trying. I ask questions, listen, support, share things from my life… and they just stay on the surface.

They’ll text me “Hii!! How r u!!” and then disappear for hours. Or say “Sorry, I was busy” but keep doing the same thing. When I finally stand my ground and say how I actually feel — calmly, honestly — they either go quiet or leave. Every. Single. Time.

And then I feel like shit for being honest. It’s been like that since my ex (she didn't love the real me, just the presents, support and things I did for her, she almost never reciprocated, and got angry at me every time I told her about what I feel) — I end up thinking maybe people just don’t like the real me at all.

I KNOW I give 110% of my energy too early, hoping someone will finally match it. I get attached to the potential of connection instead of the reality. But I don’t know how to stop doing that without becoming cold or fake.

How do I find people who actually want to get to know me — not just enjoy my energy for a bit and fade away? How do I stop giving my full energy to people?