Why do I sometimes get new apps that I have not installed when I boot my laptop? [duplicate]

So when I start my Ubuntu 20.04 laptop I eventually get some new apps like this one ''ImageMagick'' that I'm 100% sure that I did not install and many others that I don't even remember to the point that probably half of all my apps idk what they even do. Help me.

You probably installed some application that required ImageMagick as a dependency. So it was installed and you see it in the launcher.

I know that playonlinux installs imagemagick as an example.

This is normal.

Additional applications will never automatically be added. They will only be added after installing a package yourself.

The icon you see is from ImageMagick, mainly a batch image processing software for the command line with a graphical tool, for which a launcher is installed. It is there because you installed the imagemagic package, or because you installed some other application that has automatically installed imagemagic as a dependency or recommended package.

For example, one can see what packages need or suggest imagemagic with the command:

apt-cache rdepends imagemagick | less

Packages listed include libreoffice, videotrans, playonlinux, xpaint