How can i make my battery health more healthy?

Batteries are consumable parts. With every full cycle battery charge, battery health will decline little by little. It's what batteries do. ALL BATTERIES. You cannot increase battery health.

Read this article about maximizing the performance of your battery --> Batteries - Maximizing Performance - Apple

As muguy correctly suggest, once your Battery Health declines to 80% or less, it will be time to pay Apple to replace the battery in your phone. Until then, stop worrying as you can't stop batteries from doing what batteries do.

Is it 80 percent or above? Then it's fine.