هل هذا غريب؟ فهم السخرية والنبرة في الدردشة

It's just really a q at this point but when I hear totally and definitely in a sentence that I should believe, it sounds like I shouldn't-

For ex.
"You should TOTALLY get this."
"You DEFINITELY got this."

It just seems like these are doubting words but they aren't so it's so confusing for me if like are you sure? Or are you being sarcastic with me rn-😭