I think the answer to what makes good morals and ethics is genuine, search for happiness. The kind science can verify, the kind attained by doing both hedonic and eudaimonic pleasures. The kind where you aren't believing you are happy, or even have what it takes to be happy but actually perform.
This is because of several reasons:
1 other oriented things give us more happiness than self oriented things
2 happiness gained from something you find fun increases when doing it with others
3 the same amount of money spent on yourself gives you less happiness than when spent on others
Happiness is all about contributing to the self and other. The more you contribute to the other the more you contribute to the self. You are the other. That's why species that are more beneficial are more prevalent on Earth, they're blessed for what they do. Take any plant. It is used as a house, so it gets extra fertility. Or the dirt, who house everything not seen in the forest, basically, and are the most foundational of his parts. Or coral, who house and citify many ocean dwellers near the coasts. Be a tree. Be soil. Be coral.