Openings For Black


If you are lacking a clear-cut plan, it seems to me that you do not necessarily need a new opening, but rather more study material on the middlegame/pawn structures
You might have a look at the following book by Dutch IM and experienced trainer Herman Grooten: https://www.newinchess.com/understanding-before-moving-part-1
There is a pdf excerpt included in the link.

Always play the Dutch Defence! I love it!
But seriously, it depends on you. You have to find something that fits you and your style.

I love playing the Old Benoni Defence! It's a great opening to play against the oh so common Queens Pawn opening from white.
I've found that Black doesn't really know how to respond correctly, which makes for a really fun game!