In my second Life I became the devil

It's called "In my second life I became the devil" and is about a young devil called Appollyon. After dying in his old world, he gets the chance to start a new life. On his way to become the strongest and acquire true freedom, he encounters many difficulties and struggles to survive. While encountering terrifying existences, able to wipe him out at any time, traveling worlds and fighting epic battles, he slowly finds his place in the universe. Watch him build his empire and become a legendary existence known across the entire universe. So this is my first Story, and I'm still not that experienced in writing one. Because of that, I would be glad if you could point out any mistakes and give me some advice. Not originally my Cover, but I edited it. Link to original one: https://i.pinimg.com/originals/14/81/04/148104f4ddbebaf1e1c43b74c29b0eca.jpg