threejs is pretty fun, but keep in mind you have to write a lot of stuff from scratch, whereas in engines like unity and godot they come premade. it will be very difficult to create a coherent game in just 3 days with threejs (: (p.s. should know javascript pretty well)
I should learn javascript too and doing things from scratch has been concerning me from the beginning. But this might help me in a job that i might start in the next few months
I think I'm gonna spend today doing basic movement and camera so if it works out then I might continue. thanks for the heads up.