Please help me found two isekai shounen manga or if you like you can recommend me some moar hehehe

The first one is he got back from the dead world I suppose(?) and planning a revenge towards the country that betray him, the last chapter I remember he met a woman who give potion to young soldiers and make them as ugly monsters so they can get their money(?)

The second one he got back from the underworld too, finding out his friend also the female hero got betray by the kingdom and he find himself on a skeleton body but can use magic and start terrorizing the country

Wahhh sorry if my explaination not helping im really forget what the tittle is ㅠㅠ

Thank youu

First one should be The Hero Who Seeks Revenge Shall Exterminate with Darkness.

And I think the second one is The Executed Sage Is Reincarnated as a Lich and Starts an All-Out War

~4400 manga completed
~1700 ongoing...