Human failings certainly do not prove that universal principles do not exist. But such principles need to "come from" somewhere or have an existience in their own right. There needs to be a source of some sort that you connect to the principles. The atheistic scientific contingent here usually insists on that soruce bieng something that fits within their model of the physical universe. If you cannot make it fit within those constraints, then you are forced to just say "because I beleive it so" for whatever reasons are appropriate.The fact that our actual behaviour often fails to adhere to such rules and the principles (the fundamental rules) behind those rules doesn't prove that the latter do not exist. In fact, in seeming affirmation of them, the very common rules against lying and cruelty are based on the fundamental principles that we should be truthful and caring to each other. Again, what is universal are those principles, not people's behaviour or even the mechanical rules that people formulate to govern it directly.
The commonality of rules against lying and cruelty don't seem to me to demonstrate their universality anymore than 5000 years of people enslaving other peoplel demonstrates the universality of that idea.
I think it is more meaningful to say that universal concepts are those which we practice without regard to rules and culture, like sex and overeating, or preservation of our immediate family.
A better society and good life are not universal principles. They are personal goals and vary from person to person and from age to age. (Though I'm not sure what you mean by a "good life".)Fortunately, a better society is where even people outside our communities are subject to the same principles that we at least try to adhere to within.
I can't think of how else you would live the good life. Accumulation of material wealth? Through pleasure gained from the suffering of others? These do not lead one into the good life, as you would surely agree.
What drives some people to aspire to having more stuff is a strong ego and the need to be accepted/loved. That need though is typically distorted into power and control because stong egos usually don't want to make the sacrifices necessary to be genuinely accepted and loved.