How to confess my feelings without freaking them out?

So... Thing is that.. I had been liking someone for like around 2months... But he doesn't even look at me or give shit about me.
But every free Hour I love watching &admiring him 🤭.
We didn't talk that much (almost negligible)😢because I don't know to start conversation 😩
But I'm afraid that if I confess my feelings to him that wouldn't be a good idea 😞
How to confess my feelings without freaking them out?
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