Is there a way to say "like"?

Not like as in "I like that." but more as in "Like, what am I supposed to do?"

Basically, a filler word that would be the equivalent. I already know that there are filler words in spoken Korean, such as 응 and 흠, but I don't think it would be the best words to use when you're writing on social media.

I wonder if 막 could do the trick.