how do I make my cooking taste more like processed prepackaged frozen meals?

maybe I'm absolutely awful at cooking but I've never gotten anything to taste as good as like the most basic microwaved frozen food ;-;

like usually everything I make tastes, bland?
and whenever it doesn't taste bland, it tastes of the one ingredient/spice I tried adding to make it not taste bland

okay, reading the replies - I've only ever used msg when making oyster sauce for veggie wok w. rice, does it go with other things too? I feel like it has a very specific vibe
as for adding butter, I basically never use butter when cooking, just cooking oil