Always avoid unofficial "free full game" download sites, as these often contain malware or cracked software that can compromise your PC's security.
Downloading for free on PC is primarily possible through the official "LITE" version, though the landscape has changed since Konami transitioned the series to the free-to-play eFootball™ branding. 1. The Official Free Version: PES 2021 LITE eFootball PES 2021 Download Free PC Game
As of late 2021, Konami officially replaced PES with the new eFootball™ series , which is entirely free-to-play. While existing owners can still play PES 2021, the game has been delisted from many digital storefronts like Steam. If you don't already own it, you may need to purchase a from third-party retailers like G2A or XXLGamer . Always avoid unofficial "free full game" download sites,