What does manifestation actually look like?

I kinda have a hard time grasping the concept of what manifestation actually looks like, because I see techniques and a bunch of other stuff on tiktok, but I don't know what it actually looks like. I see how celebrities talk about getting their manifestation and achieving their dreams, but I don't know what it looks like or what they did. I think someone just needs to hold my hand and walk me through everything. Any tips?