After you've played 20 games, you can use this website https://ethanlebowitz.github.io/RatingConverter/index.html to type in your Lichess username and it will use your convert your Lichess rating into an approximate FIDE score.
As for openings as black, if opp. starts on the a-d files then I typically open with the Dutch defense and if they open on the e-h files then I begin with a Sicilian. If you go on my profile and look at my games as black you can see what I mean about opening on the opposite side of the board to my opponent. I don't know if you'd call either dynamic but I like them!
After you've played 20 games, you can use this website https://ethanlebowitz.github.io/RatingConverter/index.html to type in your Lichess username and it will use your convert your Lichess rating into an approximate FIDE score.
As for openings as black, if opp. starts on the a-d files then I typically open with the Dutch defense and if they open on the e-h files then I begin with a Sicilian. If you go on my profile and look at my games as black you can see what I mean about opening on the opposite side of the board to my opponent. I don't know if you'd call either dynamic but I like them!