In Minecraft , darkness is more than just an atmosphere—it is a functional hazard that hides creepers and obscures valuable ores. While potions of night vision exist, they are temporary and require brewing resources. If you want a permanent solution, you can to keep your world bright and visible at all times. Best Night Vision Mods and Resource Packs (1.21.x)
Depending on whether you use Java or Bedrock Edition, the "mod" you need might actually be a resource pack or a client-side utility. Night Vision - Minecraft Resource Pack - Modrinth download night vision mod for minecraft