

Welcome to today’s 10,000 (totally not trying to be offensive, learning is great).
TrustedInstaller is actually a service that was introduced with Windows Vista with the intention of preventing modification of system files. It typically is the “owner” of damn near everything in default Windows directories.
A fun way I typically show off the limitations of the system account is by telling people to try to delete a protected resource, like Windows Defender’s directories. Then try it again when running with TrustedInstaller’s rights and you’ll possibly find yourself just staring at your screen thinking about how useful that could be.
As someone who wishes someone had told me… Adults don’t know what we are doing either. It took me way too long to realize I’m not an imposter pretending to be an adult, we are all just kind of winging it.
As you grow older you’ll have seen more stuff and it will be a little easier, but I can attest I don’t have a clue what’s for dinner, just like I don’t know what new headache the next meeting will bring. Live life for life’s sake, the clock will keep ticking whether you’re ready or not.