Linux install broken

[FPC25]

I tried to install stremio on my linux mint machine, via flapjack, with.deb file and via source code. The first two of the give me errors related to the missing libfdk-aac2, but I could not find where could I download it. With source code it gives me error when I try to compile it:

 cd build && cmake -G"Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="" ..
/bin/sh: 1: cmake: not found
make: *** [release.makefile:36: build/stremio] Erro 127

I don't know what is happening, but please help me fix it!

[FPC25]

Read it one more time and downloaded the cmake program, now it gives me that is missing the mpv_library, but I already have it installed.

CMake Error at /usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:146 (message):
  Could NOT find MPV (missing: MPV_LIBRARY)
Call Stack (most recent call first):
  /usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:393 (_FPHSA_FAILURE_MESSAGE)
  CMakeModules/FindMPV.cmake:74 (find_package_handle_standard_args)
  CMakeLists.txt:61 (find_package)