I created a site to view the current champion rotation, since Riot stopped publishing the new rotation in their blog posts. Check it out! : r/leagueoflegends
League of Legends Free Rotation (February 2022): What Are The Free Champions This Week?
Free Champion Rotation | Wild Rift - zilliongamer
There are 40 champions in free champion rotation this week : r/leagueoflegends
New Free Champion Rotation : r/summonerschool
Playing Free Rotation Champs in Ranked : r/leagueoflegends
League of Legends: Olaf is top free champion to play in May Week 3