Discarded version of withered freddy's aggressive mode in the extra menu and the new version of it in the extra menu in normal mode

Does anyone know of an app (cell phone) or website that can remove the green background with good quality, without leaving traces? Each of the images of the Animatronics that I showed, I had to remove manually, and it took a lot of work to get it out

FNaF 2+ Minigame Teaser (Teaser 5) (Check my profile for more)

The Puppet Teaser "Charlotte's Suffering"

Withered Foxy Salvage Room Teaser

What is your current opinion about my fangame?

The Withered Freddy in Extra Menu (Normal Version) Teaser 8

Withered Foxy Salvage Room Teaser

Withered bonnie unused aggressive mode in the estra menu, and the bonus with her face in normal mode

Releasing some renders of Star Mangle (Design chosen to be put in FNAF 2 Plus)