If you're using Modular Mods, you'll need the base files
https://www.racedepartment.com/downloads/modular-mods-2022-base-files-required.52484/
Simply copy/move helmet_myteam.erp to the F1 22/_MODULAR_MODS/_ACTIVE/ folder to use. Follow the normal Modular Mods instructions to deactivate the mod...