I am looking for a Manga/ Manhwa where the Mc(Male) loses his family, so he decides to take revenge. Similiar: 91 days, The Lord's Coins aren't decreasing.
The Strongest Brave Who Craves Revenge, Extinguish with The Power of Darkness This manga is pretty heavy with its "revenge" so tread carefully, but if it's match with your taste then you'll enjoy it.