Macbook Pro M1 Disconnecting from WiFi

that is not a very good signal, and not clear enough.

RSSI of -73 is very weak signal below the minimum System Admins strive for for Wi-Fi coverage in a large area, such as an office. Is it possible you are 'reaching" for the Router rather than taking advantage of your access point?

Noise of -87 is way too high, suggesting others are using the same group of channels, possibly overlapping with yours.

Transmit rate of 136 using one of your TWO antenna is not very good, but serviceable if your connections were to stay stable, which (based on other parameters and your reports) seems unlikely. This is likely due to too much interference from nearby Routers, likely including your own.

Your situation is Likely to be caused by too must stuff is all using the same channels, overlapping and interfering.

There are ways you can work through this, manually, referring to channel use tables and reference guides and primitive tools inside MacOS. But there is a simpler way with an inexpensive Utility, WiFi Explorer. Consider downloading and using this excellent little inexpensive utility, WiFi Explorer, and using its "Spectrum" display.

Here is WiFi Explorer Spectrum view of a very crowded network like yours, also likely not working:

...

When it is working the way you want it to, hold down the Option key while you click on the Wi-Fi icon on the menubar. You get a snapshot of operating parameters like the older one below. Screenshot, transcribe, or photograph yours, and post to a reply on the forums.