This is what The Elder Scrolls IV: Oblivion should be in 2021. This is lore-friendly, easy-to-install, and will add hundreds of hours of content to the game. It also overhauls the graphics and mechanics for a great experience.
Intel i5 generation CPU or above (Or AMD Equivalent)
8Gb of DDR4 RAM (If DDR3, Have 10-12 Gb)
Nvidia GTX 1050 or above (Or AMD Equivalent)
SSD Storage! 1 HDD is too slow for your OS + this Game