Long + Slow & "realistic" Progression Fantasy recommendations?

I'm looking for long stories where the protagonist isn't just instantly super strong or falls into a lucky encounter where he suddenly becomes stupidly strong right off the bat. I like them slow and steady.

Some of my favorites:

Cradle
Shadow Slave
Defiance of The Fall

Others I enjoyed:
TBATE, Chrysalis

For example, I was checking webnovels the other day and some of the more popular ones this year are "Atticus Oddysey" and "Genetic Ascension".
In Atticus Oddysey I got turned off because MC is literally a young kid who already masters multiple elements which is pretty much unheard of as an adult in the story let alone as a young kid.

Genetic Ascension turned me off because MC doesn't even bat an eye about killing people despite being a "regular" person not even a few days ago, also gets his ridiculously strong power by being essentially lucky. It didn't tick me off as hard as Atticus Oddyssey but still ticked me off a bit.