Novels like The Alchemist's Bargain

All share Reincarnation and Portal Fantasy / Isekai

Everrain Reincarnation

Shadows Over Arcadia

I Tricked a God

Beacon from Beyond

Fantasy Realm - Infinite Worlds Adventure -

DESIRE TO BE STRONGEST

Engineer of Ruin

Same author, also Strong Lead

Beware the Trickster (An Occult Progression LitRPG)

The Snake Will Smoke in Another World: Path of the Blade

Hell Hound Evolution

God Level Surgeon Just Wants A Vacation!!