First of all you should check your OS:
If you see x86_64, we can make sure you are using a 64-bits OS.
Then we should check file type of executable binary:
If you see ELF 32-bit LSB executable, Intel 80386, basically we can make sure you are trying to run a 32-bits binary on a 64-bits OS meanwhile your OS haven’t add i386 architecture yet.
We need to add i386 architecture support on your 64-bits OS.
sudo dpkg --add-architecture i386
sudo apt-get update
sudo apt-get install multiarch-support
sudo apt-get install libc6:i386 libncurses5:i386 libstdc++6:i386
After that, try to run it again :)