My Super Pet Dragon - Chapter 19

The era of Universal Lordship has come to this world, bringing many opportunities and challenges for humans.At the age of eighteen, each person can acquire territory and participate in the Lord's continent, which will determine whether they can move into a vast world or die in mediocrity.Thousands of years after the start of this era Neo looked up at the sky waiting for his opportunity, the opportunity to change his life and move toward a grander goal.All lords choose an easy route and select a race that already exists but he wished to go against the current, so even if it was looked down upon he created his own race bravely and swore to fight tooth and nail for success.This is the story of his journey as he walks step by step toward a grander future.

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

“With my knowledge, give me a fulcrum on which to place it and I shall move the world!”

…

Sorcerer Continent—a world where sorcerers exist. Wielders of arcane knowledge. Masters of all elements. Sovereigns of space and time. These sorcerers governed the world with their unrivalled prowess. One day, a young man awakened into this world with his past forgotten and no place to call home. Follow along as Glenn, by relying on his luck and wit, tries to survive and advance in this unforgiving world. Entangled within the machinations of fate, political schemes, power struggles and wars, he forges his own path and creates a place for himself.

- Description from Novelupdates

…but it seems pretty doable.