Words have meanings. I know, this is a shock.
“Obviously” is one of those “words” with a thing called a “meaning.”
It’s meaning is this:
See that? Something that is obvious is self-evident. Apparent. Unmissable.
The thing is, if something is genuinely obvious, YOU DON’T NEED TO STATE IT. BECAUSE IT IS OBVIOUS.
If you think you might still need to state it, because it might not be apparent, THEN IT’S NOT OBVIOUS. If this is the case, and you use the word to describe it, you are using the word incorrectly. So:
The truth is, the word “obviously” should almost never be used. Think about a scenario in which the thing you are describing is actually self-evident, but its existence also needs to be stated. Pretty much never happens.
In sum, before you use the word “obviously” to describe something, ask yourself: is this actually obvious? Use the synonyms, if you must. If it is obvious, then ask yourself, does its existence need to be stated for some independent reason? If the answer to either question is no, do my blood pressure a favor and refrain from using the word.