I don’t think you can actually permanently fail anything. If you want to just farm and ignore socializing with people that’s totally fine, you can always raise your friendship with them later, once the farm is more established. Having sprinklers installed really cuts down on tedium.

Adventuring in the mines is another way to go, you can ignore farming for a while if you like, or just do it on rainy days.

Or you can just spend all your time socializing until you are maxed out and don’t need to anymore (stardew wiki required if you want to keep your sanity figuring out how to max socialize).

It’s all valid.