If I'm 300 on lichess, does that mean my chess.com Elo would be negative?

This is one reason why I prefer chess.com most of the time, it feels more rewarding to advance my elo there. Besides, it has AIs easier than stockfish (so I can practice openings risk-free) since chess in America heavily relies on that site, pretty much all of my chess friends I know in real life and actually stand a chance against are on there since it’s also part social media platform. (But I have both apps on my iphone and ipad, and use lichess for its puzzles and stockfish reviews that are free for life.)