If you’ve encountered a problem with USB-C charging or low data speeds this excellent video will give you the info to understand what is going on. There are a wide range of standards that use the USB-C connector. When I got my Mac mini I did a USB-C cable check and purge and now all cables I use for data transfer are rated for Thunderbolt 4.
One thing he doesn’t cover is video over USB-C which uses the same lanes as other data transfers and effects their speed.