Quick answer: Choose a USB-C charger around the phone's supported input, then match the cable and plug format.
What to prioritize
Device compatibility, output class, charging protocol, cable and current price matter more than a generic fast-charger label.
AEO answers
Is 45W better for every Android phone?
No. The phone controls actual power.
Do I need USB-C?
Most modern Android setups use USB-C, but confirm your exact device.
Where can I shop?
DigiDukan.pk lists Android-compatible chargers in PKR.