Install fails when installing matplotlib

Here is error:
Edit setup.cfg to change the build options

BUILDING MATPLOTLIB
matplotlib: yes [2.0.2]
python: yes [3.7.3 (default, Mar 27 2019, 17:13:21) [MSC
v.1915 64 bit (AMD64)]]
platform: yes [win32]

REQUIRED DEPENDENCIES AND EXTENSIONS
numpy: yes [version 1.15.4]
six: yes [using six version 1.12.0]
dateutil: yes [using dateutil version 2.8.0]
functools32: yes [Not required]
subprocess32: yes [Not required]
pytz: yes [using pytz version 2018.9]
cycler: yes [using cycler version 0.10.0]
tornado: yes [using tornado version 6.0.2]
pyparsing: yes [using pyparsing version 2.3.1]
libagg: yes [pkg-config information for ‘libagg’ could not
be found. Using local copy.]
freetype: no [The C/C++ header for freetype (ft2build.h)
could not be found. You may need to install the
development package.]
png: no [The C/C++ header for png (png.h) could not be
found. You may need to install the development
package.]
qhull: yes [pkg-config information for ‘qhull’ could not be
found. Using local copy.]

OPTIONAL SUBPACKAGES
sample_data: yes [installing]
toolkits: yes [installing]
tests: no [skipping due to configuration]
toolkits_tests: no [skipping due to configuration]

OPTIONAL BACKEND EXTENSIONS
macosx: no [Mac OS-X only]
qt5agg: yes [installing, Qt: 5.9.6, PyQt: 5.9.6]
qt4agg: no [PySide not found; PyQt4 not found]
gtk3agg: yes [installing, unknown (can not use
multiprocessing to determine)]
gtk3cairo: yes [installing, unknown (can not use
multiprocessing to determine)]
gtkagg: no [Requires pygtk]
tkagg: yes [installing; run-time loading from Python Tcl /
Tk]
wxagg: no [requires wxPython]
gtk: no [Requires pygtk]
agg: yes [installing]
cairo: no [cairocffi or pycairo not found]
windowing: yes [installing]

OPTIONAL LATEX DEPENDENCIES
dvipng: no
ghostscript: no
latex: no
pdftops: no

OPTIONAL PACKAGE DATA
dlls: no [skipping due to configuration]

============================================================================
* The following required packages can not be built:
* freetype, png

I have tried installing freetype and png with PIP and Conda.

I am at the border of beginner and intermediate with Python.