Infinite Extraction: I can not level up?

By the year 2525, humanity has reached the peak of technology and torn open a wormhole to another plane known as the Prime Sanctuary. In this monster-filled world where technology fails, humans survive by hunting creatures, consuming their flesh, and forming Genes to evolve beyond human limits. After 500 years of evolution, the world was now ruled by gene warriors. Alex Celestus, a transmigrator with memories of a past life, enters this system as an apparent failure. He awakens no visible talent during the genetic serum injection and steps into the Sanctuary as an ordinary warrior. But inside the Prime Sanctuary, a forbidden power reveals itself. Ultimate Talent: Merge. Alex can merge ten similar things into a higher-tier existence, turning common items, materials, and resources into rare and deadly tools. While others rely on wealth, luck, or noble bloodlines, Alex relies on accumulation. As he hunts monsters, forms genes, and walks the brutal path of evolution, Alex remains a lone wolf in a world ruled by elite families and legendary teams. When he is humiliated and crushed by the heirs of the Astra Federation, he understands one truth clearly. He does not need a powerful background. He can create one. From the Prime Sanctuary onward, Alex will merge, evolve, and hunt his way through the six Sanctuaries, until those who once looked down on him are forced to look up.