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MC gets sacrificed so his party can snatch his powers or whatever. The revenge isn't dark enough, MC isn't strong enough, the story isn't good enough. You can definitely find a manga that does all of these better.
MC is a skill lender who's powers increase over the years he lends them. Yada yada he gets kicked out, takes back all his skills and one shots monsters with gacha girls and slaves while the other party suffers. Slop basically.
MC was a hero who got isekai'd to save the world but when he comes back, he learns that his family died looking for him and no one wants to take care of him. Mc finally snaps one day and starts using his powers to end the world. The real MC is a boring shonen protag.
My Lover Was Stolen, And I Was Kicked Out Of The Hero’s Party, But I Awakened To The EX Skill “Fixed Damage” And Became Invincible. Now, Let’s Begin Some Revenge