Well, there is a very general but highest accurate answer to these questions: WE DON'T CARE and better you don't either! Because these are questions implanted in your head either from some dark implant or some dark influence or some stupid guru, who claims to be omniscient and he/she can give you the answers to the questions that torture you all your life long.
Since the world you live in is not what you are taught it is, why do you think that those question will be of any help for you?
If you don't know who you are, the "I" you are looking for just doesn't exist. It is not your 3d/earthy or higher name, not your physical body, not your wealth, not what people think of you that defines your "I". Stop overestimating useless knowledge! It is not important what you like to think, what you like to believe, but what you REALLY are, either people around you approve it as good or reject it as non society-conform. If you don't know who you are, then no one else knows who you are and apparently you are just nobody of importance

What I just wrote may have pissed some of you off. I admit that I like to provoke, but do you have a reason to feel provoked by my words? Is it really "you" that reacts negative to them or your "ego"? If you know who you are (meaning, you know that you are on a light path no matter what comes), you'll read twice to make sure you understand my words properly and your reaction will be a smile or grinning

What is your purpose on earth? Surely not what you think that it is, but we could give you an idea of your higher job if you belong to the Protoi-Alliance.
In case you don't belong to it, you have many chances to improve and become part of it, if you wish.
If you belong to it, your higher parts actively support the Protoi-Alliance. If you don't do it already and really want, you can support us down here in different ways as stated many times in other posts.
