Please break down meaning of each character!! I didn't understood it's meaning

Thank you in advance

And how would 不好意思 (bùhǎoyìsi) compare to 劳驾 (láojià)? Could the two be used interchangeably, or are there some differences?

Bu hao yi si is usually said if you want to ask something to someone, it can be like an "I'm sorry excuse me"

I found this to be a useful breakdown https://www.thoughtco.com/dui-bu-qi-saying-sorry-2278549

From the Han trainer online, for the separate characters I get the following:

对 (dùi) = correct, versus, facing, for, to oppose, pair, as regards of, right 不 (bù) = not, no, negative 起 (qĭ) = to raise, to rise, from, start, to establish, to appear, to get up, to set up, beginning

And while you should probably be careful in attributing meaning to character combinations simply based on the meaning of all the separate characters, it can be helpful sometimes. Like here, with a little imagination you could use this as a mnemonic for something like "Ow, don't start (to thank me)"

Yeah I think you have to try and leave that mindset behind when interpreting Chinese, because the tones could be deceptive in that regard.

What do you mean "matter of fact ?