As Rogues travel through Sanctuary, these potions and other things that can be used up will be very helpful.
Video games, especially RPGs, have a lot of consumables. Players can use them to give their characters buffs and bonuses to their stats, damage given, or other skills. Consumables can be things that a character eats, burns, or anything else that goes away after it is used.There are a lot of these helpful things in Diablo 4 that can be used to improve resistance or gain more experience points.
Some items are useful for all classes and situations, but Rogues should always have a few with them. The Rogue beats their enemies by moving around and using a mix of long and close-up damage. Extra experience points are always a nice bonus, and many of the potions in the world of Sanctuary have this feature.