My battery percentage is now 95. I am not satisfied this battery life. What can I do for Sailu this problem?

Hello~ Click on the helpful link below...

Batteries - Maximizing Performance - Apple

All batteries will degrade over time and the iPhone battery is no exception to this rule. Work through the information in the link above for steps to help. Post back if needed and take care. If your battery should drop to 80% or below have it replaced...

iPhone Battery Repair & Replacement - Apple Support

~Katana-San~

Another resource in addition to the excellent ones provided above:

When to charge your iPhone or iPad - Apple Community

How old is your iPhone 14? It is normal for the Maximum Capacity to drop about 1% a month.