As sugested by another kind user, I started using MagicaVoxel to create the scenery for my game (which is in the 2.5D style of Pokémon Gen 5 or Octopath Traveler).
I managed to import the test object that I made into Blender (actually it was a .ply export so i could have all the blocks be individually shown).
Now my question is, how can I unwrap and texture 1 of the blocks and replicate this to all of them? (Is this even feasible?)
I want to apply textures similar to the blocks in Minecraft for example.