Trouble Manifesting, help meee😭🪄

Hey y’all lolll. So for context, I’ve been recently trying to manifest my friend’s older brother as my SP.
A few things to keep in mind :

1. we’ve never met
2. pretty sure he has no idea who i am
   Also me and my friend are close but there aren’t solid chances of me meeting her brother irl so that’s definitely a blocker.

And another thing I’ve noticed, whenever i try to manifest things (not just this), the opposite/bad things tend to happen which makes me feel so hopeless.

I would love your guys’ help w this. Because whatever i know about him from her, I really really like and I would want a chance to explore things.

Firstly is this even possible?? Help a girl out 😭