Where to get a fast charger

My xiaomi pocophone charging brick just died. Where can I get an 18w charger or a 27w charger

I have the same phone. How long did it last you? I bought my phone in January and its still perfectly fine

https://www.mi-store.co.ke/

Try this guys

I have been rough on the brick. I have dropped it, used it as a hammer, stuck a needle in the port to eject a microsim etc.
I bought the phone in September or August last year.