How do i charge a MacBook pro 2011 if the magsafe adaptr is broken and i need to charge via usb. This model does not have usb c charging port

No, you cannot charge via USB on a 2011 MacBook Pro. That was not the technology of the time. You need a new MagSafe power adapter.

mossie17 wrote:

How do i charge a MacBook pro 2011 if the magsafe adaptr is broken and i need to charge via usb. This model does not have usb c charging port

Find the right power adapter and cable for your Mac ... - Apple Support

https://support.apple.com/en-us/HT201700

Any Apple-sold Magsafe that has same-or-more watts than the original and fits the charging port will work. Compatible power chargers are one of the few items Apple stocks for 2011 systems.