You could consider the protagonist of Trash of the Count's Family as "OP" despite not actually having all that powerful abilities. I haven't read the latest several dozen new chapters yet, but as far as I'm aware, Cale has managed to subvert or destroy any
and all opposition or problems using persuasion, deception, bluffing, connections with very strong friends, or money. While he is trying to get a "peaceful lazy life", he readily gets himself involved in a lot of big events in order to actually ensure his peaceful life. No cooking preludes or house buying nonsense(
Spoiler (hover to show) apart from maybe chilling in a dragon den
).
Another I can think of is My Civil Servant Life. This one is a more recent one about the son of the chief of a tribe of super powerful "battle race" people. Battle races are considered some of the strongest creatures in the world, and the protagonist is denoted to be the next tribe chief of that race. Except, he runs away. The novel already starts out strong with Denburg escaping from the fervent pursuit of the strongest warriors of his tribe. It easily sets the pace for the novel right from the outset. When someone can fend off hundreds of warriors from the strongest tribe in the world, you can pretty comfortably call that person "OP". He tries to lay low in human cities and work comfortably as a civil servant, but the way he goes about it is super half-assed and reckless, but its also entertaining in a way.
Although you did ask for MC's who AREN'T trying to go for peaceful lives, I wanted to subvert expectations. These stories also use the "peaceful life pursuit" trope, but it actually makes it interesting. I highly recommend these ones.
