iPhone discharge fastly and to warm

I'm sorry to hear that. Perhaps you'll find this article more helpful: Batteries - Maximizing Performance - Apple.

If you still require support after taking the advice, contact Apple Support (Official Apple Support) or consider getting a battery replacement. (iPhone Battery Repair & Replacement - Apple Support).

– Jay (he/they)

Try updating your iPhone, if an update is available:

1. Open Settings
2. Tap General > Software Update

Additionally, you can turn on auto-brightness to preserve your battery:

1. Open Settings
2. Tap General > Accessibility > Display Accommodations
3. Turn Auto-Brightness on

You might also find it useful to turn on Low Power Mode through Settings or Control Centre.