Macbook M1 proMax Drops Internet Frequently

That is not a known pervasive issue across a large sample of MacBook Pros.

However, it gets frequent complaints because every "network neighborhood" is different, and has its unique challenges, and using radio signal to communicate inside buildings and in may locations, your neighbors are competing for the same Spectrum.

Poisoning Internet performance:

By far the easiest way to cause poor performance, instability, and crashing is to install ANY third-party speeder-uppers, Cleaners, Optimizers, or Virus scanners. or a VPN that you installed yourself.

The idea that a third party, with no special knowledge of the inner workings of MacOS, can somehow find a simple way to protect your computer — that is not already being done by MacOS itself — suggests that the MacOS developers are somehow "holding out on you". That is absurd.

You should remove any and all (other than Apple built-in) virus scanners, speeder uppers, optimizers, cleaners, App deleters or VPN packages you installed yourself, or anything of that ilk.

Third-party file Sync-ers such as DropBox, BackBlaze, OneDrive, or GoogleDrive can ruin performance, but are not inherently dangerous.

?Any of that stuff installed?

Hold down the Option key while you click on the Wi-Fi Icon on the menubar. You get aa snapshot like this older one. transcribe or screenshot the values that are show there, and readers can provide an analysis of your situation.

you may also wish to choose 'Open Wireless Diagnostics' window. if you click (continue) from that screen, you get an analysis of your wifi setup. I do not recommend the so-called diagnostic "report", as it contains NO summary, and is merely a DUMP of every parameter that could possibly impact your internet connection, and is not human readable. It is so huge, they compress it (because it is meant to be sent to an Apple communication specialist.)

if you choose (Monitor) and leave the window open, you will get an alert when Internet changes dramatically.

None of the items I listed in detail would influence the radio signal.

?Have you installed any third-party anti-virus, optimizers of a VPN you installed yourself?

if you do, there is no point proceeding with further analyses, you are fully protected (so well protected you have no access to that nasty internet environment at all.)