Bro, I use Samsung S24 ultra, and you're getting better than me. 1 hour of insta would take 10% in my phone. My battery life got worse after the last update. Hope samsung fixes it soon.
The green line issue appeared after the 6.0 update. So if your phone is already updated to 6.0, you can update to 6.1 safely. Well, I don't confirm this, I'm telling this with the details on the internet