1) There is no such thing as "industry standard" sound quality.
2) "Mastering tips" have nothing to do with your issues.
Nothing wrong with that, but you're comparing your work to work by industry professionals with aggregate
decades of experience.
I am recording stuff at home on a very basic set up
Against those professionals working on the state-of-the-art in gear in rooms that are most likely properly set up for the task.
Not trying to discourage - Just offering a touch of reality. It takes some people years
and years and years to even find out
if they're capable of making good recordings (i.e., if they have the listening skills necessary).
Learn - Experiment - Upgrade your monitoring chain (sorry, I just have to say that) - Listen. It takes time. Could take years - Could take decades - Might not ever happen. Just like anything else, it's not for everyone...
All I can throw at you in the positive are the two actual "rules" of audio --
1) You will only ever be as good as your monitoring chain allows you to be - Period. End of story. No exceptions.
2) Your monitoring chain will only ever be as accurate and consistent as the room they're in allows them to be (again, no exceptions).
Most people I know with a lot of difficulty in this arena are using sub-par monitoring (and/or) in an improperly treated space (i.e., throwing acoustic foam all over the walls and ignoring the
actual problems in the room). They make recordings that "sound fine in the room" and they're surprised when they sound like [SELF-CENSORED] everywhere else. Until the monitoring chain is up to the task, anything that sounds fine everywhere else is a lucky shot.
