友 is built from the 𠂉 (person (top of 毎·気)) and 又 components.
It belongs to a phonetic family with 有, 右, and 雄 — they share the 𠂉 component and the reading ユウ.
A common word using 友 is 友達 (ともだち), meaning “friend”.
Kanji that look similar include 右, 左, 布, and 在.