Chess rating system

Hi for whatever reason I was started at 800 not 1200I won my first game because I know how to play but its odd I was started 400 points below others.Will my rating always be 400 lower than it should be?
The site used to have everyone start at 1200. Now when you join you are asked what your skill level is. You apparently chose the lowest level which is 800.
For instance I consider myself a 2400 player, but here I try to keep my rating at around 1700 so I can show myself progress.

Basically, the USCF and ELO systems rate you based on your play against other players. The higher the opponent's rating, the more you gain in a win and less you lose in a loss - and vice-versa. The Glicko system throws a curve into this by assuming if you don't play tournaments frequently, there's more uncertainty in your rating (though he doesn't reduce it!) and there should be a larger effect than normal on the rating changes when that's the case.

I'm on about online chess only
Doesn't matter. The rating formulas are essentially the same. One of my last wins in Daily, against someone close in rating to me gave me 24 points and the one before that was 17.

Glicko is a rating system created by Mark Glickman.
https://www.chess.com/article/view/chess-ratings---how-they-work
http://www.glicko.net/glicko.html

In playing my first game on Chess.com, I received a rating of 1200, before I played. Why, and how was that arrived at?
Ditto. I wasn't happy either. I'd much rather start at zero and be rags to riches..
"Started from the bottom...now we here..."
"Started from the bottom...now we here..."
Sing we me.
"Started from the bottom...now we here..."