How to execute 32bit c++ program on 64bit linux?

So I got the c++ program I want to execute, but I get error:

zsh: exec format error: ./myProgram

file myProgram: myProgram: Mach-O i386 executable

My system is 64bit, so is it the problem why I cannot execute it?

P.s. I also tried on 32bit ubuntu VM, but I get:

bash: ./myProgram: cannot execute binary file: Exec format error