I own legion 7 2021 with Ryzen 9 and RTX 3080. I am getting 98c on the CPU with a peak of 102c, while the GPU reaches 87c. All that while gaming only. In addition, I tried to reinstall AMD and Nvidia drivers from the Lenovo website, but that didn't work. 

This temp was recorded while playing Overwatch 2 in 2560x1600 and graphic on high.

Thermal throttling will start first (stuttering for some), and then damage to the integrated circuit.

Restart your computer, do nothing, wait 2 minutes, open HWMonitor, click View->Clear minmax and show us the results.

This is what I got after restarting and waiting for about 2 min and click at clean the max/min function. 

Put Hybrid Mode on to let the CPU calm down, wait 2 minutes  and post the screenshot again.

Disable all Overclocking

I didn't get what you mean by disabling overclock. I did not do any overclocking on the laptop. 

Your CPU should have 1395MHz in the Value tab. This is minimum.

I did not get you. Do you mean that I have a program causing the heating issue when I play?

Show Task Manager, tab Autostart

and TURN ON Hybrid Mode in Vantage