As long as you have your own textures, ideas, and a form of uniqueness, or obvious differences, I think there’s no issue.
Mojang/Microsoft hasn’t copyrighted the idea of building shelter to survive, nor has it copyrighted pixelated games.
You should be fine, as your game is mostly inspired by minecraft and doesn’t reuse textures and/or assets. Even then, blatant rip-off games of minecraft, using minecraft textures, sometimes even named “Minecraft” exist on the Roblox website. Most of these games fail because they don’t present anything that minecraft doesn’t already have.
I don’t think Mojang/Microsoft really cares about rip-offs or closely-inspired games anyway since their game is successful enough. There’s a small chance Microsoft will care if your game becomes super successful, but I wouldn’t worry too much because at least it’s not Nintendo.