Question about Lenovo Gx20l29354

I would like to know if this power supply or another one is compatible with my laptop, it's an "IdeaPad Flex 5 14ALC05" recently bought on the Digitec website, the power supply supplied at the time of purchase has a USB-C tip and charges via this port. The power supply supplied with the purchase has a USB-C tip, it charges via this port, but if I want to use this USB-C port for data transfer, leaving my laptop on the mains, it is not possible! On the manufacturer's website for this model, I noticed that it has a cylindrical power socket? So a power input other than USB-C. I need a second compatible power supply, I would specifically like to use the cylindrical power port of this laptop and NOT the USB-C port as it is now, I find it very risky to find lenovo accessories even on their site which is a big problem.I'm not sure I'd want to make a mistake and damage my new laptop with seemingly compatible equipment.