So I'm not sure if this is actually true but I had two insights about values.
1: There are two main values and all the other possible values come from them and they are Love and Freedom (like feminine and masculine)
2: your value system is designed like a pyramid and on top of that pyramid is either love or freedom
now a way to find your values is to think: combining what two values gives me love/freedom or what two values is my love/freedom made of. And then continue down the pyramid. What values is are the two values below love/freedom made of?
ofc to grasp this you need an understanding of what kind of love and freedom i am talking about and also then you also need to know yourself and your own defintion of these values good enough to design your own value pyramid but I think this might make it a lot easier and clearer.