Stupid question: Are you in Europe/Africa?
This hardware configuration [RPi3 -> E3000 RTL-SDR dongle -> Active antenna ] is correct if your antenna is powered up.
In aiming your antenna, keep in mind that there is a difference between the magnetic compass reading and the true north heading. Your true heading in Europe is a bit more to the west by a half of a degree. That’s really not that significant.
Keep in mind that the satellite is roughly over the equator at 25 degrees east, right over DR Congo.
Here is a site that will help you find the satellite: N2YO
Is your receiver frequency calibrated? You should be able to see GPS satellites at 1575.42 MHz if you can receive peaks at 1600 MHz with the LNA and SAW filter. I don’t know how wide the filter is on the active antenna. I have not put one on a VNA yet.