magsafe advice

The answer is no, you won't recharge your iPhone more than once. If you asking for 14 Pro Max, you can't even charge it once.

The Apple MagSafe Battery Pack has a 1,460mAh battery capacity, while your iPhone 4323 mAh. You can easy calculate it.

Read product description in the store:

MagSafe Battery Pack - Apple

I'm using one of them with my 12 mini and it allows mi to charge it once, additionally charging is so slow and with the high usage instead of charging your iPhone, battery just drops slower.

Up to 70% additional charge with iPhone 12 mini or iPhone 13 mini and MagSafe Battery Pack* 

Up to 60% additional charge with iPhone 12, iPhone 12 Pro, iPhone 13, iPhone 13 Pro, iPhone 14 or iPhone 14 Pro and MagSafe Battery Pack*

Up to 40% additional charge with iPhone 12 Pro Max, iPhone 13 Pro Max, iPhone 14 Plus, or iPhone 14 Pro Max and MagSafe Battery Pack*

The iPhone's "charger" is actually built-into the phone itself. The MagSafe is a type of power adapter that will only "charge up" a phone's battery. It cannot add more charge than the battery can hold.

Not sure what you mean by "best." The Apple MagSafe was designed to work with a number of Apple iPhone models.