When you are farming the campaign in RAID Shadow Legends you will often get the below "Energy refill" popup to use one of your energy potions to restore full energy.
Never click the "Confirm" button!
This is because the game will use your top-most potion which may have 99 days left to expire, instead of your bottom-most potion which has for example 10 days left to expire.
Close this popup, go yourself into your mail and pick the potion that is nearest to its expiry. It's a little extra work / clicks, but it is a much better discipline for your account.