n00bish
The adjective form of 'n00b', like if you're the kind of person who still uses 'lol' and thinks emojis are just for babies.
He's the most n00bish kid in the class. He still thinks Minecraft is a game you play with Legos.
Her n00bish level is so high, she thinks TikTok is a type of cereal.
He's so n00bish, he tried to text me using only emojis and a calculator.