You either didn’t get past the start screen, or you’re trolling.

• Sekiro has a single weapon, Elden Ring has hundreds
• Sekiro has death blows and the parrying mechanic, Elden Ring has staggering, dodging and blocking
• Sekiro has prosthetic tools you can upgrade and switch through, Elden Ring only has ashes of war
• Sekiro has lots of vertical movement through grappling and jumping, Elden Ring has no comparable mechanic

Elden Ring is an evolution of the Demon Souls formula, but already with large changes. Sekiro is completely different.