League of Legends (LoL) Question: Meta Sheeps

If it's normals, just go for whatever you want because why not.

If it's ranked, you should play champions you feel comfortable with rather than trying to force yourself to pick something you're uncomfortable with.

It doesn't matter if it isn't in the meta if you can win with it.

Be confident on what champions you picked. It doesn't matter if that specific champion is in the meta or not, what matters most is that you're a pro in playing this champion and you come victorious in your matches.
Just continue in playing Nasus even if he's not popular in the meta today. And if you want to play as Zed then fine, I won't stop you.
(Coming from a Karma main.)