if you were the only one, could there be right and wrong?

Right and Wrong are human concepts, so there still may be right and wrong in your perception, but as most right and wrong is related to social interaction, then there is every prospect that the terms could lose any meaning or relevance.

Even 'good and 'bad' are up for grabs. There is anything that promotes your survival and well-being, and anything that damages it. So survival = good and threat = bad. Simple but effective.

Decisions could be right or wrong. Faced with a predator, there could be right and wrong choices to be made (such as confronting or running away), but that judgement of right and wrong could be very different depending on whether you were predator or prey.

Are the 'values' of right and wrong an intrinsic built-in feature of the Universe and everything in it? No. Take human beings out of the equation and I see no evidence. Perhaps the concepts of right and wrong can only come into being when an organism is able to choose objectively, which assumes an awareness of self, and the ability to rationalise. This would still be the case whether you were the only one or not.

Yes, I think anything helpful and constructive will be right , while anything harmful and destructive will be wrong.

The wrongs done toward God and to ones self remain, even tho' no one else is around. unless of course one is perfect.

Yes.

But, you could be wrong about what you thought was right and vice versa.

Only according to what I thought it to be.

Yes, anything that kills you, bad; anything that keeps you alive, good....

if your rights wrong your right