Charger and wire are original samsung product. Every time I put the usbc in the charing Dock it keeps going on then off. It's fine if I use a normal USB but not the USBc
"charging dock"? Are you referring to wireless charging? If so have you checked the settings under Settings->Battery and device care->Battery->More Battery Settings->and then the charging speeds?
Galaxy S21 Ultra 512g(VZW), Galaxy Book (original, VZW), Tab S8 Ultra, Tab S4, Galaxy Watch3(VZW), M8 Smart Monitor