The percentile tells you that 49.9% which means you are better than around 50% and worse than around 50%. I personally think though take the rating to be only an indication. The rating that is most reliable is from over the board play.
I am 1019

Your percentile is 49.2% of players on this site, so you are almost right in the middle of the ratings here. Overall IMO, based only on this rating, you are just above beginner/novice level but a little distance from being considered intermediate level which is around 1400-1500.

The percentile tells you that 49.9% which means you are better than around 50% and worse than around 50%. I personally think though take the rating to be only an indication. The rating that is most reliable is from over the board play.
Absolutely and you also have to consider the online cheating aspect which is why over the board play is much more reliable. Here is a blog I wrote about that kind of thing and what to watch out for.
https://www.chess.com/blog/batman-collector/chess-cheating-red-flags-when-playing-online

fried liver knocks people oput at a lower level
I play the French defense as black so no fried liver attack. I started playing the French because I hated facing it as white.
where does this put me?