we do not share your data with anyone and there are many ways to control the visibility and storage life of your data here.
but the internet is a public space and you should always assume your data could be compromised.
be smart with your password, use tor or a vpn, and use pgp for sensitive communications.
first time is the hardest. Had to do a reship on mine but I got it after a month of anxiety. The only thing that got better was shipping times shrunk. I learned the reliable vendors and learned a little patience. good luck→