Out Of Curiosity

https://www.steamgifts.com/giveaways/wishlist

GRIS. Don't ask why, I do not get its #1 placement, even if it is a great-looking indie.

If you want a more realistic answer, then what most people would tell you that they really want and cannot live without is Dark Souls: Edo Edition (sometimes humorously called by its nickname, Sekiro: Shadows Die Twice, even though it is obviously a Dark Souls spin-off).
Granted, probably the vast majority of said people would never finish just the main quest even if they got it, because the game is "difficult". The Dark Souls series has this thing going on with it.

Be careful of region restrictions with gifts.

https://store.steampowered.com//search/?filter=popularwishlist&os=win