How do I overcome a parasocial relationship?

(F,23) I've been following this person for 4 years. She's an actress who cultivates parasocial connection with her fandom. It sounds sweet or cool but it's affecting me more than I thought. Because of her, it's impossible to leave her. I really want to. I'm well aware that none of this relationship is real. And it's consuming my time too much. I don't like it at all. I can't sleep at right time because I keep checking out her updates on X (formerly Twitter), IG and TikTok. Now, I've deleted IG and TikTok. It worked. It didn't work with X. I deactivated my account once then I went back to it on X. Simply because I wanted to know what she's up to. I also wasted my precious free time on her. After work and study, I'm supposed to have fun with gaming and reading books. Sadly, I've reduced my gaming time and reading time for her. I spent too much time on her. It's messed up.

Lately, I've been resenting her because of her poor choices and attitude. I know she's nothing like the image she likes to show as a public appearance. That's not her real self whenever she talks with fans on livestreams. She's decent to them but they won't know who she is as a person in real life. I don't know her too. I don't care if she's decent or not in the real life. My point still stands; I'm not happy about how I feel about her. It has become too embarrassing. Why am I obsessing over a stranger? Celebs aren't worth for my time. I want to focus on myself.

This resentment is making me drained and stressed. I hate the negative feelings inside myself, with nothing to distract my mind. It's like a drug addiction. I even spent $300 in total on her all of these 4 years. She's not on OnlyFans. She's just a celeb that has a large fanbase. Fans make projects for her and they spent lots of money on projects. I did the same. My hard-earned money flew away for this rich girl who didn't even need a single penny of mine. I stopped spending money on her too. I don't plan to do it again. Not just for her but also for others. "Do not pay or gift them." That's my first thought in the morning.

Any advices for me?