Increase your Intelligence stat
Wear gear with mana bonuses
Use accessories that boost mana regeneration
Level up and invest in magic-related skills
Find and equip spellbooks with higher mana capacity
Upgrade or enhance your spellbooks if the game allows it
Complete quests that reward mana or spellbooks
Buy mana potions or mana-restoring items from vendors
Craft mana-restoring consumables
Defeat enemies and bosses that drop mana-related loot
Explore hidden areas and chests for spellbooks
Unlock new spells through progression or training
Use enchantments or runes that increase mana
Rest at inns, camps, or save points to restore mana
Equip set bonuses that improve mana pool or regeneration