Why don't you try this with RaspberryPi
TBS5520SE Multi-standard TV Tuner USB Box
https://www.tbsdtv.com/products/tbs5520se_multi-standard_tv_tuner_usb_box.html
It does not require external power source.
Or you can go for newer model, that needs external power source
TBS5930 DVB-S2X/S2 TV Tuner USB Card
https://www.tbsdtv.com/products/tbs5930-dvb-s2x-or-s2-tv-tuner-usb-card.html
Both devices support DVB-S2X standard as well, plus
TBS 5930 supports VCM and multi stream, but you would not needed if only
tuning to Astra 2E / Astra 2F / Astra 2G (28.2°E) for now :)
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