what kind of plug in adapter can I use for an IPHONE SE

The following is the one typically used: https://www.apple.com/shop/product/MHJA3AM/A/20w-usb-c-power-adapter

You can also use the power adapter from an older iPhone if you had one and if you still have both the power adapter and the USB to Lightning cable for the older phone.

If you have an iPad or Mac power adapter you can also use that.

You can use any Apple or Made for iPhone power source and cable that you have lying around as long as the connectors fit. All Apple power sources are cross-compatible; the only difference with be the charging time.

For the above

About the Apple USB-C to Lightning Cable - Apple Support