Why did you move in the first place? Sounds like a big lifestyle change; what drove it? Desire for outdoor space? Wanting more space to have kids? The vision of a house with a yard?
What is the source of the dissatisfaction? Is it the financial outlay? You've certainly taken on a huge amount of debt, and watching your investment balance dip for that downpayment couldn't have felt good. Is it the aesthetics -- do you like what the home could be and are willing to pay the price to live there, but you hate how it looks now and dread the time and money and effort to get it looking nicer?
Happiness is when reality exceeds expectations; unhappiness is when expectations exceed reality.* What expectation did you have that the house has not met? What additional burden did you not anticipate? Are there things that you can do to make these things better, short of selling the house?
IME, people tend to be the most unhappy when they have a particular mental vision of something, and let that vision blind them to the realities. IOW, if you want a house because that represents "success" in your mind, or because That's What People Do When They Have Kids, then any house you buy is likely to be disappointing, because you don't actually want a house, you want a feeling, and feelings are always fleeting (and they tend to flee even faster when the realities of home ownership set in). So maybe you thought you wouldn't mind the cost of the mortgage, but now that the initial excitement has worn off, you're finding it bothers you more than you thought. Or maybe your SO wanted the house more than you did -- or vice-versa -- and now one of you is feeling grumbly about the reality, and that's adding friction. Or maybe you thought a fixer-upper was fine, but now you're losing patience with getting the house the way you want it, but don't want to/can't afford to fix everything all at once.
The reality is that a house is a consumption item, not an investment; if you're buying a house to live in, you're doing so to improve your daily lifestyle, not because you hope that in 10 years the property market will be even crazier and you'll make a mint.** And the bigger the price tag, the bigger the emotional payoff needs to be to make it seem worth it. And since you're the one who decided to make that large purchase, only you can decide in the end if that purchase is worth it. So what part of that payoff aren't you getting -- what is it that, in retrospect, you undervalued, or failed to consider? Once you've figured that out, you can brainstorm ways to try to make that better, even if it's not perfect in the end. Because nothing is; everything has a tradeoff.
*I like to write this as a mathematical formula -- Happiness = reality - expectations [greater than] 0 -- but I can't figure out how to do a "greater than" sign here.
**If you are buying a home because you think home prices will continue to skyrocket, that's speculation, not investment, and it's the wrong reason to buy a primary residence. If you want to invest in real estate, buy rental properties that will put money in your pocket today, not something that might or might not pay off in a decade or two.