I’m looking for a novel where the MC gets stuck in a completely isolated world where he’s all alone in complete wilderness and has to survive. I just really want an MC who grows on his own with no one around. Fighting wolves and whatnot, ya know? Maybe getting stranded on the beach by himself. Having to create things by hand. A world where everyone’s gone because of something he doesn’t know, but he’s stuck there by himself. just something that’s kinda survivalist and devoid of humans.
Breaker of Horizons The Primal Hunter and ofc Everyone Else is a Returnee The Darkness Was Comfortable for Me - this is if u like bedge jp isekai (i don't reccommend this)
I'm a spider so what kinda fits it to a T. The mc has reincarnated to a magical world's most dangerous dungeon and literally every one is her enemy
https://www.royalroad.com/fiction/37231/a-lonely-dungeon - dungeon core, but fits your criteria, there's nobody around at all during the completed Book 1. https://www.royalroad.com/fiction/46646/a-lonely-exploration-of-tao - I only read volume 1, which was a 21 chapter prologue. During this time, the MC was totally isolated to the point he was breaking down mentally. I assume, he'd return to civilization in volume 2+.
The Tutorial Is Too Hard - while there are other people he can communicate with, the MC has to run the tutorial alone.
48 Hours a Day - most of the game worlds he travels to only has npcs - the 1st arc he has to survive on a deserted island with (mostly) no one around
The World After The Fall The MC didn't regress and continued his adventure by himself. Let's just say, he's the only one left in the tower from Earth. It also has a manhwa, the title is The World After the End.