Switching from Google Pixel (og) to iphone 12 pro

I am trying to figure what to use for a charger. I understand the iphone comes with a charging cable (usb-c to lightning). My google pixel charging block is usb-c, and I believe it is 18W. Would this be fine to use? My only concern is the long term impact on the battery life/health. I started using my macbook air charging cable and block (usb-c) to charge my pixel, and I feel like it really hurt the battery capacity of it over time (although I have no way of knowing for sure). I can shell out $20 for the apple block, but I feel like it is the same as my current google one. Any thoughts?