Increase the amount of items that can be obtained in the game

I bought a Minecraft survival map, but when I tried to install it, my console couldn't because it had too many files. So what I'm suggesting is that they increase the storage space. So that things like this don't happen, because I really wanted to try that map but I couldn't because there wasn't enough space for me to download it.So an increase in space would be really great and I would be very grateful.