I am still a beginner but one of my best tipps so far:
Don’t use a cheap SD card and make constant backups.
For backups I use Win32DiskImager and WinSCP

@MWel1977
There are many threads concerning that topic
This might be the wrong place to continue that discussion. Just comment under my video

I use a module which I have found on github but is not published under the 3rd party modules

@MWel1977
That is very easy and just a module you have to install:
https://github.com/Jopyth/MMM-Remote-Control

and I don’t know anything about programming or linux. My YouTube playlist shows what I have achieved so far

@MWel1977
I am a beginner and use VNC viewer (which has a desktop view of my Raspi) on my work computer and my android smartphone
https://www.realvnc.com/de/connect/docs/raspberry-pi.html#raspberry-pi-setup

@shgmongohh
I use MMM-PIR-Sensor and it works just fine on 2.7.1
https://github.com/paviro/MMM-PIR-Sensor

@DæmonEyes
me again
have you tried sudo npm audit fix?

@jhwwhite
Great, I am glad that worked for you, too!

@DæmonEyes
This is what worked for me but I am a beginner, too
Inside the MagicMirror directory:
git stash
Then
git pull
Then
npm install
After that search for modules that use package.json files, go to their directories and
npm install

@DæmonEyes
Just fill in your github user email and username

@jhwwhite
I had a similar problem.
Have you tried this?
Inside the MagicMirror directory:
git stash
Then
git pull
Then
npm install
Afte that search in which module the package file is located and
npm install