Phone chargers are designed to output a specific voltage and amperage, which are tailored to the needs of the phone. USB cords are not always designed to handle the same voltage and amperage, and attempting to adapt them can cause damage to the phone or the charger. Additionally, if the cord is not properly adapted, it could pose a fire or electrical shock hazard.
If you need to charge your phone, you should use a charger that is specifically designed for your phone model. This will ensure that your phone is charged safely and efficiently.