Should I start a new save? Feel like I've hit a roadblock because of the upgrade

So I started the game a week after it dropped, and at first I thought it was a bit dull. Stayed with it and saw a post by someone saying the same thing. People were saying that the game gets better the further you progress and more rooms you get.

Found out how to open all four doors of the antechamber etc.

But then, I hit a roadblock... I did an upgrade for the hallway, thinking I was being smart, and it was after this it felt like I took a huge step back...

The way things are for me in the game atm, it feels like I've done everything, because every day feels the same and like I'm not progressing. I just keep rushing through things hoping I get to push a bit further but it's just not happening.

Now I know that's not the case, I still have a lot to do. I only have one achievement and the only reason I can see why I am so stuck is because of that upgrade I went and chose.

I looked online and saw that you might be able to change upgrades, but I have no luck with this.

So I'm just wondering if I should start over with a new save and make smarter choices, or stick with this save.