I agree that limiting through apps is truly a double-edged sword. I had a similar situation with my daughter, and I noticed that the whole point is for her to actually want to put the phone down herself. Bans only make things worse, because at 14 she's not a little kid you can just redirect.
The advice people mentioned above about finding an interest - that works, but I'd add this: you can't just offer an alternative, you need to make it accessible and convenient right now. We invited our daughter to go skateboarding with us (she'd been watching skateboarding videos on TikTok), and then she herself suggested going to the park. The key is - it didn't sound like a lecture, just "I'm bored by myself, want to go?" Slowly but surely, she started spending time away from her phone not because I banned it, but because she found something to actually do with her hands and mind.
It also helped to just remove phones from the bedroom and dining room without making a big announcement. Not "I'm taking it away at night," but "phones don't sleep in our bedroom." During meals we all put our devices away - me too, not just her facing a restriction. Usually teenagers catch double standards instantly, so if you're scrolling through your feed during lunch, it'll be harder for her to agree not to do the same thing.