I tried several methods for compiling vmtk:

1. I tried the mentioned way in the documents, it didn't work
2. I tried to compile VTK separately and introduced it to VMTK. I did it with v9.4, v9.2 and still it didn't work.
3. The main issue was the make couldn't find python version because find_package( PythonInterp ) was an old version.
4. I change all these commands to explicitly instruct it to use python3 using find_package(Python3 COMPONENTS Interpreter REQUIRED). Still didn't work
5. After 3-4 days, I checkout vmtk to commit: 6211af0 since my friend could have compiled with this version and it simply worked with no modification in CMakeFile and ...

I did it on Ubuntu 24.04(Pop Os) with python 3.10

Writing this to help others who face the same issue.