My iPhone 8 won't turn on. Even with a new battery installed

I was hoping there was some trouble shooting techniques I could try before then. But I guess I'll have to wait it out until my appointment. I can hear that it's charging and that give me hope to keep trying to turn it on but no luck so far. Which is really strange because it was working fine when I went to sleep and put it on the charger. I haven't had any trouble with it until now.

My Apple appointment isn't until next Monday 7/13 so I stopped by a phone place in the middle of the mall. They didn't charge me for it after seeing that it didn't work.

I can't take it in to Apple until next Monday 7/13. So I try a phone place in the middle of the mall. I wasn't charged for the replacement battery after seeing that it didn't work.