exact Make & Model of your Laptop?
I would check your laptop BIOS Settings to see if there are any settings that affects your CPU's performance.
Also could be that the manufacturer has put a speed limit on the processor so as to not overheat. Therefore I would ask your laptop support about it.
Download this Ryzen Master clone for Laptops and run it. It should give you a lot of information on your Ryzen processor similar to Ryzen master: https://ryzencontroller.com/