Nitro 16 Cpu Temperature 10 degrees less than mine.

That's normal. Temperatures are below 90°C and in starting of 80`S. It's depends on room temperature, laptop thermal paste, cleaning conditions.

You can follow these steps if your want to lower more-

1)Fps cap 
Capping fps to lower value like 60, 100, 120, 140, etc can greatly lower cpu temperature and keep cool
(Cap you fps through Nvidia software or use RTSS)

2)Prop the laptop up with books around the sides to reduce heat
Grab stack of 2-4 books that are equally thick. Slide the spine of a book 2–3 inches (5.1–7.6 cm) under the right side of the laptop. Do the same on the left side of the laptop.

[You can also Buy good cooling pad in which stands are inbuilt, its better than books]

3)You can follow this below guide completely to reduce Cpu load and increase game performance-
Windows 10/11 optimization guide for gaming — Acer Community

Thats good and you should not worry about your laptop temperatures as they are fine.

In case if you don't know I should tell you that lower resolution do more stress on CPU and high resolution do more stress on GPU. Fps cap also help in cpu temperatures. Using upscaling/low graphics settings result in more cpu work.

Tip for you- Connect Your cooling pad to power bank or use mobile adapter with plugged in to power socket to connect your cooling pad in order to save laptop energy.