My parents died when I was 14 & 21 respectively. Decades before, my dad moved my mom away so we grew up w/o any extended family nearby. When my first child was born, my wife and I were on our own - which would surprise zero Americans.
Objectively I was good parent and a terrible parent. With no ongoing guidance, the terrible wound up outweighing the good (because w/o exp, what we have are hunches, anecdotes and ill equipped reasoning). My kids and I will spend the rest of our lives repaving my bad roads. This result would have been different with extended family nearby and - critically - some on hand.
Some American ideals (eg:individualistic independence) come with an unreasonably high price. We would be a far better people if we elevated keeping 3+ generations together and normalized housing that would support that.