Capturing NOAA and METEOR M2 3 satellite images

Hi,
recently I’ve been busy with setting up the system to receive satellite images from NOAA15, NOAA18, NOAA19 and METEOR M2 3. Even though the first attempt was extremely successful (=pure luck), all further improvements resulted in worse and worse reception.
I started with a simple V-dipole which I made of precisely cut aluminum 4mm rods and connected them in 120° shape and further to the coax and RTL-SDR. I sat 1 metre away from the “antenna” with a laptop and received a nice image of clouds, precipitation, etc.
Later I set up a RPi with a RaspiNOAA image that contains all software required. Connected to the same antenna and placed to a more open space, results were not as good as from the first try. It is true my location is not OK as I live in a valley surrounded by mountains but anyway.
I then started working on a QFH antenna. I used the calculator and pre-cut the wires to exact lengths, etc. The frequency matching was completely out; it was somewhere at 131 MHz but I’d expect it to be just over 137 MHz. With more aggressive approach, I shortened the loops for a significant amount and finally achieved the best matching at 137.5 MHz with about 15 dB.
Yesterday evening there was a 89° (basically an overhead) pass but the image was a disaster.
I have no idea what to do next. Does anyone here have a working QFH antenna? If so, could the wiring be explained? There are several examples available but they vary a bit and I got confused. I use a solid copper wire (3 mm diameter), not a copper tube.

Thanks!