Spell Slots in DnD 5e - A Simple Guide to Spell Use
Cantrips, unlike spells, do not consume spell slots, meaning there is no limit to the amount of cantrips that can be cast per day.
Spells - bg3.wiki
Divine Domain only gives you more spells to choose from, but no extra spell slots for casting them.
Hogwarts Legacy Spell Master Mod Enables Five Additional Spells
The new Hogwarts Legacy Spell Master mod allows wizards and witches to use five additional spells within the game.