If you are new, don't waste your time learning new openings, stick to opening principles.
Can anyone suggest a response to d4 that fits my repertoire?

If you know the queen's gambit declined, why not play it as black? You normally won't get the lockup that you hate.

Merovwig thanks for your response. I don't plan wasting time studying openings above principles/tactics, I'm merely looking for an opening where I can enjoy the resulting positions, and preferably one that makes sense with the other two
Notmtwain thanks, that is a great idea

1. d4 e6 can transpose into a French if White responds with 2. e4, as you can then play 2... d5.
You can respond to to 2. c4 or 2. Nf3 with 2... d5 also. This move order will often transpose into a Queen's Gambit type position that you are familiar with (albeit with the Black pieces).

At your level, your opponents can not hold opening advantage even if you are 3 pawns or piece down you can still win if you set tactics. And it is all about tactics and blunders specially in endgame. Players do not understand how pieces can work together, they dont have harmony and piece cordination unless is easy obvious pattern like 2 rooks, queen bishop checkmate.
So learn tactics, focus on endgames, patterns, pawn chains,

Just stick to basic priniciples and try the kings indian defencce
its good
1.d4 Nf6
2.c4 g6
look up the opening
here is an example game
Sorry but King's indian is highly complicated and doesnt suit at all here.
KI doesnt really follow basic principles, or at least in a complex way...
Just play simple, what looks natural to you.
QGD is nice for that (natural, logical, sound, can be dull but also sharp so could fit to anyone), but if u play french, u can also try to play classical dutch via the move order 1.d4 e6 2.c4 f5.
S.Williams made a great video series about this classical dutch in chess.com, which is easy to learn (contrary to KI) :

poucin the Dutch looks very much like an opening I'd like to play! Thank you for the link, excellent video series.

I second Queen's Gambit Declined, I'm not an expert by any means but I feel like that is a great starting point for playing against d4. Once you feel comfortable with QGD it is easier to branch out into related systems

Yes I do like the French, Trump, it seems to work for me. At my level it doesn't seem to lock up as much. My main issue is I am not enjoying the Old Indian. As chess is a hobby of mine, I'd rather find an opening that I find fun to play and study
@noodlefueled thanks for your input!

Thanks in advance!
Learning openings, and trying to develop an opening repertoire at your level is a waste of time. All you need are Opening Principles.
As long as your hanging pieces, and missing simple tactics, it not going to help your game to work on openings.
Thanks in advance!