In the light of the recent events... Could you recommend me some queer books with wizards/witches/magicians?

Sure can! Try Labyrinth Lost by Zoraida Cordova, Runebinder by Alex Kahler, The Rules and Regulations for Mediating Myths and Magic by F.T. Lukens, Carry On by Rainbow Rowell, the upcoming Inkmistress by Audrey Coulthurst, The Impostor Queen by Sarah Fine, and Reign of the Fallen by Sarah Glenn Marsh!