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Any recommendations with the same vibe as "I Was Mistaken As a Monstrous Genius Actor", "King of Ad Lib" and "Be the Actor"?

Can anyone help me find this webtoon/manhwa where the MC is powerful since he just came back from a world where he is hailed as the strongest to the real world wherein he used to be weak. Now with powers/skills, he is out for those who bully their family especially his mother. The person who loathes them keeps sending assassins to them or just someone to ruin their lives but MC will not back down and will exact his revenge.

Thank you in advance!

It's an omegaverse manga wherein the uke and seme are both Alphas. Both of them are from influential families (The uke comes from a western aristocratic family in the west while the seme comes from a politician family from the east) They met on a party and fell in love.

Uke is long haired(not sure if blond but he has light colored hair) while seme is slightly younger with black hair.

Can you give me the title of a certain webtoon wherein the MC was asked by his uncle(or male elder not sure) who is a producer to fill in as a contestant for an idol show. He was told that he will be eliminated afterwards but the audience always vote for him because they think he was oppressed by the crew that's why he always manage to stay safe in the competition.

Anything that is so cute that will make you cry at the same time..

A man who was reincarnated in another world as a 9th class wizard and retired after saving the conti...